We should thanks to those recent dramas on exchange and people now learned and are awake for using them.
The true principle not only in Bitcoin but instead in the entire crypto, you must have control over your key which those mentioned above don't have. I don't know if there's data that shows how many users leave on centralized exchanges as of now like Binance or Coinbase. As we can see it has an impact on Bitcoin prices that struggles to resist because people transferred their crypto assets.
These theories had always be there, a few occurances as to what could be when things go wrong but, it was mainly due to hacks but in the FTX exchange situation, it was just an ambitious CEO, trying to take so much advantage of centralisation to benefit himself and crew but, it back fired. Destroyed his exchange, reputation and is deep in debt.
Centralization has not been the idea of bitcoin. That's so fiat and having it otherwise sort of removes what we might treasure about bitcoin or cryptocurrencies. A lot of lessons is sure to have been learned from this but still, I don't expect everyone to play it safe.