1) Low popularity does not mean something sucks. Listen to the global top 10 playlist on Spotify and you will know what I am talking about: the worst, least creative music ever made happens to be the most popular and the greatest works of music in the history of humanity are much less popular.
2) There are many solutions for backwards compatibility, some of them are listed in this video (AppImage, Flatpak) and other ways of making software more self-contained. Now... WINE can sometimes be more backwards compatible than Windows.
3) "Linux foundation executive director presents from a Mac". Well, this has been observed in Microsoft talks too. In fact, there's one talk where the presenter cannot get Internet Explorer to do what he wants so he takes a moment to install Chrome.
4) "Linux people are dumb"... Are they? I would not say so.