I only see problems with LTS. I do agree that there are some stability issues with Ubuntu that just don't get fixed, but this is mostly an issue with the other releases. This is the problem with staggered releases your fix might very well take 6 months.
Arch has severe problems in my mind especially in stability, but as you say it is easier to fix stuff and that is a huge plus. It's just a trap I try to avoid for my desktop!
Thanks for the explanation makes a lot more sense now!