ETFs may attract more investors to invest in Bitcoin, but they don't encourage Bitcoin privacy for investors and don't give investors full control of their Bitcoin. These two types of investors have the same goal: to invest in Bitcoin, but their ideas are different.
It is obvious bro, ETFs are institutional class. In short, there is a middleman. In reality BTC should not have any middlemen to make the buying, selling, or holding your coins. In reality, you go to an exchange, give your money, and take BTC. That BTC sits in your wallet and the key is owned by you.
If you own the key, you own the funds.
So if you lose the keys, you will lose the funds to the person who has your key. Therefore always keep the key safe and away from places where it could get damaged and you won't be able to read anything from it.
Anyway, it is obvious that ETFs are centralized, and ETF investors are not going to enjoy the real sovereignty of BTC. And I think they don't want to enjoy that, that's their choice of investing.
It's not as simple as self custody good, custodial bad and no sovereignty.
ETF exist to bridge the traditional capital to have exposure to crypto price, ETF basically enabled fiduciaries to invest in Bitcoin, the existence of ETF obviously has use.
Not everything non-self custodial is bad, sometime it's needed for some party that can't own direct bitcoin with self custody due to regulation compliances.
In that case, you won't get privacy either way and the only way to go is through ETF.