I think a lot of people is going to go bankrupt with their short expectations.

ETF or not, bitcoin is growing and too strong, it will keep growing. If the ETF is rejected, it just means we are closer than we were from an ETF getting accepted. The SEC will give up the final recommendations and changes required for the ETF to get passed the next time. This is a long term race. ETF rejected means nothing. Shorts that are expecting a big crash may have their short positions backfire.