But there is varying degrees of trust required. Also the quality of trust.

Where's the trust in a bitcoin tx?

You have to trust that the restaurant where you're having lunch will accept BTC as payment. In reality, using Bitcoin requires the same trust-based infrastructure as everything else because the only way to buy anything with it is to trade it for fiat.

That Bitcoins still have a value when you sell them

1 BTC = 1 BTC

Wow, that's a lot of "Scam or Other Issues"

Well, not really. Tainted coins is a real, growing problem that BTC hasn't solved yet.

In short, BTC is not fungible.

sure, and 1 UST = 1 UST, but it turns out that people who thought they didn't need to trust the asset held its value are considerably poorer than they were before.