That would be patently incorrect.

(As probably the only person who has done multiple high level PvP tests of 5E here). By the third test; no one even wanted to play a caster, even assuming you get all spells back when one respawns. Casters get wrecked.
Every time someone carouses about casters at high level in this game, please go read the sheer amount of spells that require concentration, and then realize that you can ever only have a single one of them up at a time.
Also, is there a reason we have a giant flood of just created accounts? Not sure if this happens normally or we have a lot of secondary and tertiary accounts being made...