

It doesn’t really matter what kind of block it is. Vivaldi comes with TLS (Transport Layer Security overlay), but it is not necessarily turned on if its an old install. If a fresh profile has it turned on, then all traffic leaving the browser are encrypted and cannot be tampered with. you can check if it is turned on–
go to Vivaldi://flags
There’s a youtuber who posted completely dressed feet pics - shoes and stockinged ankles peeking out of full skirts on only fan for a parody video on her channel and was surprised by how much it was making her instead.