Well

I must be sincere, and say I would never expected this

It’s more players than Elden ring or Baldur’s gate 3 at launch.

I don't think that should be terribly surprising. Both those games are targeted at specific niches. They were notably successful for gaining popularity beyond their niches, but they were still niche products. Elden Ring is still incredibly obtuse and will fucking murder you out the gates and just expect you to pick yourself up and try again. BG3 is a D&D game that expects you to know the tabletop version to a degree. Both are awesome, but they're aimed at narrower markets