Note, I mapped building as osm.org/way/539962505#map=18/61.62997/-6.70602

It is not 100% clear but it seems to be this location based on aerial images

osm.wiki/Tag:tourism%3Dalpine_hut

Is it really with "Permanent human presence during the opening period from staff to provide services"?

please, see osm.org/note/1203262

I am not entirely sure whatever such small navigation light should be tagged as man_made=lighthouse.

It was a very good idea to add height tag, it explains situation well.

Are you sure that osm.org/node/3749922855#map=19/49.00380/24.73157&layers=N was supposed to be mapped as man_made=lighthouse?

see osm.org/note/1202907

are you sure that osm.org/node/3756986945/history was supposed to be tagged as lighthouse?

see osm.org/note/1202812

is there really lighthouse here? see osm.org/note/1202810

I fixed tagging of osm.org/node/4018439411#map=19/49.63527/15.69424&layers=N - it is man_made=tower, not man_made=lighthouse

see also osm.org/note/1202789

Are you sure that there is lighthouse at osm.org/node/1863593260/history ?

see osm.org/note/1202785

Are you sure that there is lighthouse at osm.org/node/1863593260/history ?

see osm.org/note/1202785

Are you sure that there is lighthouse at osm.org/node/1863593260/history ?

see osm.org/note/1202785

see osm.org/note/1202755 and osm.org/note/1202754

In this edit without comment you added a lighthouse in a strange place. Are you sure that it was correct?

see osm.org/note/1202750

zerkniesz na osm.org/note/1202741 ? Mam wątpliwości czy ta minilatarnia kwalifikuje się na man_made=lighthouse

Do you know what is the name of this alpine hut - osm.org/node/2229417150#map=19/58.29330/-5.00137&layers=N ?

I admit that I am not really sure is it really an alpine hut.