Quoted from DennisK:

This is fair. Originally there were a lot more hints but editing changes dropped some of the more obvious ones. Zach does love his hype after all!

That was actually coincidence. SwL and TWIP are the only two coordinated departures that related to the TPN launch (and Zach was going to leave TWIP Podcast this year anyway, for real no matter what, but he moved up the timing for this). We didn't know H2H was ending; Martin joining up was unrelated. Same with Pinball Supernova. The announcement of stopping came, someone thought "maybe he'd be interested if this was his marketing umbrella" and reached out and he was. But his quit was a "real" quit as originally intended. Anyway, just some behind-the-scenes fodder.

Yes, looking back at the video (I only could screen it myself once between meetings today, everything has been moving fast) I can totally see where the impression comes from. All I can do is apologize to anyone it upset there was no intent to make anyone feel left out. We've been discussing diversity internally specifically for quite a while and pre-reveal we were only comfortable reaching out to a handful of folks to try and control the messaging (and this included women, but we had no confirmation of acceptance before the trailer drop, which was motivated in part because there was concern that it was playing around with people's emotions too much to just drag it out after all the quitting announcements).
And yes, the whole idea of TPN is to have an team-based umbrella for content creators to use. I have no idea if it'll work or not. But all sorts of differing voices are wanted.