You're being disingenuous. IRC has been right at the center of the vast majority of non-enterprise technical communities and especially opensource for the last 25 years.
Say what you will about culture but this is a fact and I don't see it changing. Slack and Teams are gimmicks at best. Matrix unusable for me, every single one of my peers and, apparently, the vast majority of said technical communities that keep their center of operations firmly entrenched in IRC.