Not necessarily, Mullvad also has its own multi-hop. Unless you mean latency, then yeah.

Full circle to sticky notes on monitor.

The idea is they process the payments, and see your connection, and which exit node you use, but don’t see your traffic.
Mullvad doesn’t know who you are, nor where you’re connecting from, just your traffic.

You -> Obscura -> Mullvad -> Website
And each only sees past their arrow.

Nothing.
Just that I can’t easily switch servers.

Well, now I can, although I can only use Obscura with one of the servers. But having access to all of Mullvad is much better.

That’s why I said plain Wireguard.

I am not.
That’s just what obscura does, and they use Mullvad as exit nodes.

Since they don’t have a Linux client, I just added it to Mullvad client. Well, that one config. Plus it means I can just easily use Mullvad directly.

The Cloudflare bit, at least their consumer product in question only works as a public VPN (such as Mullvad, IVPN, etc…), meaning it’s more of an encrypted proxy. So it doesn’t counter anything.
Why it blocks incoming connections on other interfaces ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯
It only makes sense for it to capture all outgoing connections not destined to split-tunneled IP ranges, as to prevent leaks.