Is there any open source app on android that supports rcs?

As a developer writing code who used windows to ssh to linux servers I would disagree. But of course it depends on the company and the nature of the work, just offering my experience

Every place I’ve been at had developers using windows machines and then ssh into a linux environment

A decentralized marketplace would honestly be pretty sick as long as they can figure out how to ensure people don’t’t get scammed

Would it be fair to summarize your point as “if you have nothing to hide you have nothing to fear”?

I believe it’s only RAID 5 and 6 that are unstable, https://btrfs.readthedocs.io/en/latest/btrfs-man5.html#raid56-status-and-recommended-practices

For anything that’s not a server I always use the unstable channel and add a stable overlay to specific packages that benefit from it