You are missing the point. I am spending most of my day inside VS Code, using it for writing Markdown content as well. Apples to oranges. I don't want the author of some 3rd party obscure app looking at my content without my consent. I don't say I trust Google 100%, but I trust Google more than 3rd parties that I know nothing about.
Why do you trust Google and Microsoft, companies known to spy on their users, rather then some small company who would go under if someone found out they spied on their users?
I'm not saying everyone that's using Google or Microsoft are stupid, I'm trying to understand why people trust Google and Microsoft, is it because so many are already using them, or is it that you have been using them for a long time because you had no other choice ?