It’s a big deal. Minecraft is a huge community, most of the big YouTubers or Streamers become big because of it or Fortnite.
You also have to remember that it’s Microsoft behind Minecraft, it’s the second GAFAM after Google which is unhappy with the situation.
It’s definitely gonna affect the IPO negatively.
Or even better, a fork of Firefox which disable all that telemetry crap and bundle with uBlock Origin : LibreWolf.