But this is to privilege 100+ year old origins of these terms over their actual application and development in most of Western Europe. It’s anachronistic and misleading.
To keep things fun, USSR was not communist either for most of the time, it was sort of socialist I guess. There are a lot of jokes reflecting the confusion between socialism and communism and how we always go to communism but never reach it
Today there are examples of socialist but not communist countries in Europe. But if you compare them to Venezuela or Brazil you would be crazy.
Maybe we need better terminology
In the UK at least, the distinction was important because calling oneself a socialist was acceptable, whereas being a communist during the Cold War was not.
There were plenty of communists who didn't like that last part - but they were brutally purged by the autocratic-dictatorial faction. Famously: https://en.wikipedia.org/wiki/Leon_Trotsky
I'd blame the angry, simplistic Western denunciations of anything vaguely resembling communism (including socialism) on the Western monied classes. Whether Old Money, Plutocrats, Wall Streeters, wanna-be's, sycophants, or whatever - those folks generally hate any idea which might mean less for them, and more for the 99%.