Skype was messed up for ages, they actually have a really cleaned up Linux client, it's based around Electron so it actually works a lot better than the older one. Skype is an example that they do care about Linux too.
The new Skype client is crap compared to the old one. 99% of all settings are gone. Video calls are gone.
I've said this before, but the last time Skype worked reliably for me was on the Nokia n800, circa 2008. I had a subscription for several years 2012-2015ish and didn't have an acceptable quality call once.
Yikes, Skype is electron based?
That explains why it hogs so much memory.