which would be a thing unheard of if we were still in 1993. We aren't, and you find people happily using iOS or Android devices that do mostly web browsing and video watching and would functionally be a toy or a paperweight if you transported them back to 1993.
Computing has changed in the last 25 years. Paradoxically, more people are using FOSS than before while fewer would subscribe to the kind of Free Software purism (totalitarism?) that the FSF advocates. Windows running a (GNU/)Linux subsystem is a victory of Open Source, but a defeat for the Free Software movement.
Which brings us to
> if they align practically or philosophically with the FOSS movement
and I'd call this a ruse - the Open Source movement developed as a countercurrent to FSF's ideology around Free Software mostly in the shape of people that liked Free Software (both as in Freedom and as in Beer) as well as software licensed under more liberal licenses but did not see the idea of Copyleft as central to their enterprise. There is a FOSS movement, replete with sympathisers and drama and everything around it, but it's at best a strict superset of the Free Software movement that also contains people with non-FSF-compatible opinions.