I appreciate your concern but I also am not sure there’s much the Foundation could do in any official capacity in response right now, at least in the short term. To your own point, if we assume this is true:
the kyc is not bitmains idea. They are just doing what they are told. This could easily be a govt tax dept that wants to check the balance sheets.
…then I cannot imagine the Chinese authorities would listen to a (comparatively) very very tiny US-based 501(c)3. So short term there’s not much we can really do, although as stated I would encourage folks to vote with their dollars or buy through re-sellers without KYC.
Your longer term question is fair, but this development just underlines the need to have a more competitive mining ecosystem—although there is much debate on how to get there (see various discussions on simple PoW versus ASIC resistance, PoS, etc). But I think everyone is aligned on getting there, whether from the Foundation, community, or company.