And I am not terribly surprised. Because Canonical has taken it upon themselves to offer tens of flavours for each distribution and fifteen years of support on all LTS releases, now going back ten or twelve years. And on top of that, they also offer support on tens of other upstream packages in the universe branches on top of main packages. And now one kernel update can contain 3000 different fixes. It would be suprising when they weren't overwhelmed frankly.