> It looks like it would affect LUKS or others just as well.

Except you can use good old password protected FDE on any major desktop operating system other than Windows Home Edition.

> I can hack a lot of encryptions in seconds with a simple keylogger.

A thief can't use your keylogger to decrypt a stolen laptop that's properly encrypted. A rogue recycling shop can't do that either. And kids won't be able to use, uh, Raspberry Pis to decrypt random Surface laptops.

So yes, it's kind of a big deal. People shouldn't have to worry about the TPM details of their devices to benefit from encryption in ways that protect against the most common threats.