Mastodon is a self-hostable software, not a service controlled by a single person. The servers are hosted by inviduals so you should be saying “Some people on Mastodon thinks X”, instead of the whole platform.
But they are always coming from the same IP, so you are still identifiable. If you want increased anonymity you need more people to use your instance to mix the search topics.
I do not trust EA, for example, Leagure of Legends (from Riot) always worked on Linux until some day they decided to implement Vanguard and screw all the Linux player base, so the same thing will happen with Apex Legends.
At this rate, no EA game would be playable on Linux. They are adding kernel anticheat and blocking Linux players to most multiplayer EA titles, even old ones. They are literally robbing us money.
IVPN imo, just because it offers reverse split tunneling, if you prefer having more countries to choose from you can use Proton.