"Many Linux and FOSS geeks today use Linux only professionally. Most of their personal work is on proprietary Apple and Microsoft gear. Many use Windows or macOS boxes in presentations about FOSS topics."
Yeah I can only shake my head sadly when someone pretends to give a shit about FOSS while using a Mac and an iPhone.
https://www.linuxjournal.com/content/we-need-save-what-made-linux-and-foss-possible