I do use AWS, and have tried out GCP before. Just because I use Vultr doesn't mean I can't also use others.
The best thing to do is to simply ignore them as asking about downvotes just invites more of them.
But it is telling that there have been at least 5 downvotes but no one is willing to comment as to why.
Edit: since I see you have a downvote (surprise, surprise) I'll clarify that it wasn't me.
Seems like a recipe for breeding unfairness. "Don't talk about the system", :sigh: