The problem of Bitcoin hash concentration in China was paradoxically a direct result of keeping the blocksize small. This happened because ASIC production is most economical in China. With an adaptive blocksize limit in Bitcoin this likely would not have happened since The Great Firewall of China would have placed miners in China at a very significant disadvantage due to latency. This would have forced Chinese ASIC manufacturers to sell their devices for export. The lesson I see here is that a well designed crypto currency will route around censorship and drive mining to those jurisdictions that do not engage in Internet censorship. Monero is way less vulnerable here since it is likely that both China will be the most cost effective place to manufacture electronics and will also continue to censor the Internet.

Well the myth that "bloat" leads to centralization has been debunked.

Edit: Monero has also other ways to mitigate this risk such as an ASIC resistant algorithm, and initiatives such as smart mining; nevertheless I do agree that this risk will need to be addressed and minimized.