I have subscribed to D&D Shorts for a long time. I really enjoy it; Will makes fun videos and is super charismatic.
That said, he's not a journalist, and this is not good reporting. There is a story here, and I want to know what it is, but he is not responsibly assessing his sources or digging for verification the way any reputable reporter would. For example, he is heavily relying on sources that have already been shown to have misrepresented facts (i.e. by insisting that survey responses were never read, etc.). The way those facts were misrepresented, and the confidence with which they were misrepresented suggests an agenda. A journalist would be (rightly) much more cautious about those sources going forward, whereas his response has been to simply drop those allegations but otherwise rely on those same sources' other claims.
So are their other allegations accurate? Maybe. It's impossible to know from this reporting. Much verification is needed, though the broad strokes (D&D moving to a much more digital platform) seem pretty uncontroversial. This video seems more about DnDShorts trying to salvage his own reputation than it is responsible journalism, which is understandable: he's a YouTube content provider not a journalist.