I've been playing FL on and off since Heavensward. I started playing mostly on Mana DC back in 2020 because I was tired of the kindergarten that is EU FL. I've played around 4200 matches on Mana and I know how they play. Since 6.1 FL on Mana has been absolutely atrocious. If you think JP players aren't abusing SMN and WHM, you're delusional. Let me tell you that every game consists of atleast 20-30 SMN and 20-30 WHM. I'm not even joking.
The only time there is some sort of normality is when I queue up with the PvP veterans because they at least mix it up somewhat, be ready to get absolutely destroyed by DRK and AST.