When I worked as a technician, I had to install windows and help people set up proprietary garbage on a daily basis, despite me being very much into free software. It felt a bit surreal at times when I was setting up AD servers or helping grandmas to use whatsapp while I was using a degoogled phone with lineageos and linux on all my computers and home server.
Now I work as a teacher, I can use whatever I want on my devices and encourage my students to do the same.