I use wireguard with Mullvad since it launched without issues. They even have it in the official client. I talked to them about the article that one VPN provide

I use wireguard with Mullvad since it launched without issues. They even have it in the official client. I talked to them about the article that one VPN provider wrote about it not being scalable and not privacy preserving and their response was that it was mostly FUD. I believe one of their technicians wrote a blog about it, but now I can't find it.