Can you please stop changing HK Tramway Ltd to RATP? That's not the company directly.

The government simply thrown a bunch of stuff on the same layer / as the same object type for everything. There is not explanation, distinction, or area of validity. It could even a remnant of the demolished village.
HK Post even records Lung Kwu Tan Rd in the address only. LandsD has a record of Black Point used as the address. https://geodata.gov.hk/gs/view-dataset;jsessionid=4882EB791AE66D609EE6DD4C8B112750?uuid=f38039e6-29d9-4151-860a-dec8f9ee3d08&sidx=0
The natural gas pipeline landfall didn't mention Yung Long either. Using your arguement of absorbing into bigger places, doesn't Yung Long only appearing on the base lower at very close zoom shows it's lower significance than Black Point?
What other Geoinfo sites are you referring to? You have not mentioned this.
Very funny to claim "weak argument" when your Wikipedia evidence already gives a conflicting account.
The government has been using Black Point for the power station, radar station, and a demolished weather station. This is also used in the Lung Kwu Tan reclamation study, and future Black Point quarry. Of course this may refer to the cape and mountain proper, but Yung Long has not been further in use.

osm.wiki/One_feature,_one_OSM_element please.
Nim Wan and Tsang Tsui shows exactly the problem of conflating a village proper with the area.

What at Tsim Bei Tsui?

For Hung Hom and To Kwa Wan, they are caused by their status as police districts, and OZP. aside from other possible government sub-divisions.
Hok Yuen, Ma Tau Chung, and Ma Tau Kok are still used as constitutency / Electoral districts. Tai Wan is at least on the park, swimming pool, electrical substation, and pumping station; also the electrical cable tunnel.

You removed one set yourself, so I'm not sure why you claim I am the original author of this concept by myself. osm.org/node/5096721441/
osm.org/node/5097533128/history
Ma Tau Kok is created by another user, and was set by you once before osm.org/node/4254396525/history
Ma Tau Chung was set by others osm.org/node/4796025509/history

Your source is copyrighted. A collection of facts is also copyrightable as a database. Looking at a map only shows you what the map maker and perhaps government interprets. Other than the public concept of places, there are many aspects to the former, such as postal address, land administration, housing, development, etc.
I'm not objecting your upgrading of Yung Long. I'm saying you should not delete Black Point.
Big places can have small places in them. It is not single-level, or non-overlapping.
For references, I'm not directly adding those. They existed before, that I'm fixing that user's edit. osm.org/node/6791843289/history
osm.org/node/6791831599

Also please don't Map For Renderer. In https://gk.historic.place/historische_objekte/l/en/index.html for example, it is properly displayed.

This is a `place=locality`, not `place=hamlet`.

I'm saying your concept of Yung Long being the exclusive toponym here being historical. This area is more well-known as Black Point.
How is Hok Yuen and Tai Wan gone? I don't know what's the relevance of Ma Tau kok and Ma Tau Wai, or how they are "not so well known".
A reminder you should not directly copy or base you decision solely on official maps in copyright.

osm.org/changeset/120912747

A road name is not necessary condition for whether a place is not historical. There are plenty of roads named after gone places/

Secondarily, there is One Feature One Concept. The `place=locality` is supposedly for the `demolished:place=hamlet`.

Cape Collinson has human activity at the crematorium, 2 jails, and a mosque/

I'm obviously not saying both of them should be `=suburb`, but you deleted it first.
If you look at Wikipedia, zh says Black Point is the "exact location" of the power station below. En writes "build the station at Black Point".
You are talking about archeology. Yung Long is more of a village and surroundings. Black Point is suitable for the region from Lung Kwu Tan to Tsang Tsui.
Inaccessibility by public has nothing to do with the area.
OSM is also about present concepts, not a historic village.

1. As I said before, two toponyms can co-exist together.
2. This lacks support from elsewhere.
3. The place name doesn't have to be directly at the terrain it is named after.

What do you mean by the power station's name. It's a cape, and a more well-known toponym in the area. These two can also co-exist.

There are no sidewalks on some sections of Stubbs Road. So much for your "lack of local knowledge".

You duplicated 66 and 67 in all of them, and removed 79 and 79A.

Don't remove `natural=wood` when adding `leisure=garden`. They describe different things.