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
SUSE originated in Germany, where it’s just the normal pronunciation. “Suse” also pre-existed as a nickname for “Susanne” (of course, the company name was derived from an acronym which isn’t used anymore).
The issue comes in when non-Germans, especially English-language natives try to pronounce the word. English pronunciation is incredibly inconsistent. Hence English speakers tend to fail (very confidently) when pronouncing foreign-language words.
(Fwiw, Germans and many others don’t know anything about the silent G in “gnome” and will happily pronounce GNOME the way the project intends without being told. Similar things are true for the I in Linux.)
Do they also pronounce the E? “Guh-no-meh?”
That depends but many people will be familiar with the absolute basics of English pronunciation and likely recognize the word as English too, I think.