Problem is when their game adversely effects my game, which it does. If it was just a question of getting beaten by sandbaggers or virtual power merchants then no one would care all that much. Plus everyone should support the idea of beginners getting into racing without owning a boss turbo or a power meter.
It's when they change the dynamic of the race that it becomes a different story, e.g. pushing the lead gp in a crit at out of cat power so people don't know what the 'real' lead gp actually is, sprint finish is ten blokes but five of them are getting DQed on zpower so who are you sprinting against exactly?, or the absolute worst where you manage a breakaway in a longer race (super hard to do with the zwift draft) and some fat bloke spinning a toy turbo at 5.5 wkg brings your competitors back on.
It's not a massive issue for me as I race B (although the crit sprints are defo aggravating) and most of the shithousery seems to take place in C like you point out, but zwiftpower plays a huge role in making racing enjoyable. Placing it in the hands of zwift, who have different incentives across teh entire userbase, doesn't sound like a positive step. But we'll see.