I don't see file extensions as a problem to be solved, either. My point is, it's nice that Linux (esp. Desktop Environment) ecosystem embraced magic byte parsin

I don't see file extensions as a problem to be solved, either. My point is, it's nice that Linux (esp. Desktop Environment) ecosystem embraced magic byte parsing as a solution where having no extension creates problems. I'm just happy to have the option around, I don't want to deprecate or against file extensions. If you're interested, I can run some benchmarks on NFS and FTP as well, however.