I was one of those newbs that initially got exposed into Bitcoin via Robinhood. Which basically is like owning a Bitcoin ETF since you cannot withdraw your coins. However, as soon as I saw my fiat net worth increasing quite dramatically, I had to learn what on Earth was happening and look into what this Bitcoin thing actually is. This led me to quickly understand the important concept of 'not your keys, not your bitcoin', and so I sold all that fake btc and bought the real thing. So, as someone who started with buying paper BTC but progressed into hodling the actual asset, I choose to be optimistic for those newly coming into BTC through ETFs, because at least some will without a doubt go through a similar experience to mine, and learn the true significance of this tool beyond it's fiat price.