“Long-term support” does not mean what you think it does
People actually still believe that LTS means getting new features, new desktop environment updates, and other cool stuff for years on end.
The purpose of an LTS release is to more or less freeze itself and its packages in time, so that users know exactly what they’re getting. However, part of being frozen in time means any bugs, crashes, and hardware support are also frozen in time. The end result is that LTS releases will often have wildly outdated package versions, and those outdated package versions will most likely contain a ton of bugs and issues that have long been fixed in subsequent releases – subsequent releases you’re not getting, because you’re on an LTS release.