I always thought those whoe said susa instead of soos are wrong.
Suse stands for “Software und System-Entwicklung” https://linuxiac.com/opensuse/
Edit: Yes, she can still be wrong but then it’s supported by the rest of susa’s staff https://youtu.be/RsME20zXbQI&t=13
I live in a place where people call things whatever they want to call things, and when enough people call that thing by that pronunciation for long enough than it becomes the default pronunciation. Which is exactly the same as where you live.