@Gargron @cjd Yes, that is the bigger problem here.
Even if Google had no ill will in blocking those clients, its policies - assuming they indeed require server-agnostic apps to moderate content - are misguided at best. It would be good if we persuaded Google to change them.

One way to do it I think is to report Google Chrome as violating the same policies. I don't know if it's a good way, but it sounds fun and it's the only one I can think of.