In changeset 169828708 you deleted Shenavall Bothy, which is on the MBA website. In 169828646 you deleted an emergency shelter which is open to all. In 169827499 you deleted another bothy listed on the MBA website.

Even if OSM was curated to the desires of landowners and estate owners, these things are going to be mapped sooner or later, so the only approach is to make sure their access restrictions are tagged appropriately (i.e. add access=private if they are actually private), not to delete them.
future.

Please also provide a useful description for your changesets. This is a collaborative project, other people need to know your reasoning for making changes. See https://wiki.openstreetmap.org/wiki/Good_changeset_comments

I’ve reverted all your changes so far. Please do not delete any more bothies. If tagging is missing/incorrect on private ones then please fix that on a case-by-case basis. The wiki is a good help for appropriate tagging: https://wiki.openstreetmap.org/wiki/Tag:tourism%3Dwilderness_hut