I don’t agree that tier lists are a big problem in and of themselves. What I think is the problem is that they highlight the awful balancing for the world to see.
I’ve said before that I feel like Shadowlands/BFA have had some of the largest gaps in power between the meta and non meta specs, and that’s reflected on ladder as usual.
Why would a new player be incentivised to learn the fundamentals of PvP on something like a caster/MM or a DK spec when they could pick something else and still learn whilst also ambiently doing three times as much damage with inherently fewer weaknesses or counterplay options.