People panicked about the issue can either apply a quick IPTables mitigation or install the kernel Ubuntu hasn't released to production yet. It's annoying that Canonical is late, but it's not the end of the world either.

Unlike Arch or even Debian, Canonical has dozens of kernels to test and verify. The downside of supporting your software for ten years across multiple chipsets and even offering in-between kernel updates is that you need to test and maintain a shitload of kernels. Testing all of those takes time.

I hope they do a write-up about what went wrong here but all the big companies were weeks late to the party. My guess is that some of the patches were causing issues when backported, or Red Hat would've released updates much sooner as well.