You should also be aware, that not everybody buys into RMS's ideology, nor does it make sense for everyone. Also, the guy dos not have a monopoly on FOSS.
> Very disappointed in the level of understanding of these
> things on hn lately.
Well, maybe the understanding is lacking on your side…
I don't buy into it either, and spend my days working on proprietary stuff. But I use a ton of open source projects, and pretty much everything I do interacts with open source protocols, like HTTP.