How I see it, its more that if you use multi CCD cpus, you have to manage the CPU manually as some games prefer cache, some games prefer clockspeed, and the OS picks the wrong one at times (usually the clock speed) as the OS assumes the higher clock speed = faster. As the thread director works correctly with Intel chips for the most part (where the e cores have a lower clock) so the e cores are often not selected for performance.
The solution AMD will have to transition to is to exchange the other CCD for the core count focused design (e.g Zen 4 vs Zen 4c) which would be clocked lower to receive similar benefits from the current itteration of thread director.
The different Garuda varients sans the gaming version are different desktop environments. Garuda just happens to support a lot. The gaming version of dragonized (which is KDE) is just dragonized with preinstalled gaming apps, probably the ones featured on their garuda gamer app