but even if a small percentage of those people, let's say 5%, will somehow become more interested about bitcoin then, for me, it's a great result.
I get your point, but do you believe people who buy BTC spot etf's are actually interested in BTC, i think it is the opposite, and they just want to invest in BTC without caring about its technology or basic things such as having a BTC wallet or backing up their seed phrase. BTC spot etf's is great for BTC price, but not so great for what it was originally created for.