So am I correct I'm thinking that SQLite doesn't need, for example, FS sycalls just the VFS functions?

Yes I've used sqlite with things like littlefs [1]. Without an OS. If that's what you mean.

https://github.com/littlefs-project/littlefs

Could say the same about Postgres. People like their databases.

If you're in a company and using a database, you're probably dealing with a database group, an administration group

Which sets limits

Which programmers hate

So they look for databases they have absolute control over

Which leads to SQL lite

I’d rather see this than that claw shit

The less stuff you talk to the fewer libs you need.