You can use iCloud Relay without even noticing that you are using it, this is not true with Tor as you'll spend most of your time waiting for reconnecting circuits.

That doesn't line up with my experience at all.

You will still notice when some sites completely block you, of course.

Because it is 1. Not Tor and 2. Fast

It’s more like a VPN instead of Tor

Actually, it’s closer to Tor, but hardcoded to two hops, and hop 1 and 2 are always different (audited) organizations.

I wish they’d just used Tor though.

Isn’t hop 1 always apple and only the external IP is a secondary provider?

There's no way they'd use Tor, because it has major UX problems.