I've never heard of a player being scratched due to maintenance. I feel like this would have invited more suspicion.
Sounds like it wasn't injury related though. "We're about the team and getting better as an organization, our culture, our standards" is a pretty damning indictment. We'll likely never know what happened but IMO there's too much smoke around Walman being addicted to Fortnite/video games to ignore.
I find it far more likely that (as I posted elsewhere) it's how Walman handled the hit, versus some video game theory.
Walman said "it's not NOT the injury, we wouldn't be here if not for the Boeser hit" just after Warso said "it's not injury related." Then Warso said "it's not hockey play related" which nuked all the people saying he got benched for mistakes on ice (I believe you were one of them).
So therefore it's likely about how Walman handled getting hit. We won't know the details but my theory is a) lied about how bad it was which puts himself before team and certainly didn't help him play well, b) did something during treatment that wasn't cool, be it treating training staff well, or PEDs, or who knows. Any of those things are far more likely to me than him playing too many video games, but it's certainly possible I guess.