Because it's not my ISP's or anyone else's business that I happen to be running a Bitcoin node. Or doing anything else online.
Discussion
Great point. Not in a position to run a node yet but when I am I would certainly use Mullvad again.
That's the main reason why I use proton VPN on my PC. I have one browser that's routed around the VPN for things like prime video that block VPNs.
I'm just hedging for a possible future tail risk where it becomes the case that you don't want to get caught running a bitcoin node at home.