I see where you’re coming from. BUT, … and this is a HUGE but … you’re not accounting for 3 extremely important things:

• Lots of people still prefer to run many Normal types, from back when Cronenberg Morty and Morticia were undisputed S-tier must-picks. These were/are notoriously hard to counter (without a debuffer - my 3rd bullet point in a minute)

• The solo carry potential of an individual Morty who has the ability to quickly snowball a fight, usually turning themselves into raid bosses
— I know of 3: Gotron(R), Dragon(R), and Queen(P)
— I couldn’t think of any Scissors types. Maybe Season 4 Morty?

• Extremely powerful debuffers that otherwise aren’t great for PvP but are specialized for shutting down raid bosses (due to accuracy debuffs, evade buffs, paralyze, poison, and other utility, e.g., attack/defense buffs/debuffs, and often amazing speed). They can’t hard carry on their own, but they can hard counter a solo carry.
— I know of 2: Forbidden(P) and Mortox(R)
— Maybe Cubism(P), The Pale Morty(S), and even Wasp(S), but this is debated

I got carried away there; usually rock types have the advantage because more Rock types need extra focus to hard counter than Paper types. Queen is an oddity as the only Paper I could think of that fit that description (and because you’ll probably have to use Forbidden to hard counter her, or gamble by using Mortox because idk what scissors types can shut her down).

For Forbidden, (and esp. Cubism,) he shouldn’t be tearing through a trained team, but I switch to a high-dps scissors type. It’s mostly the brokenly powerful raid-boss-style Mortys that need extra focus.

TLDR: I agree that Papers are in a strong state by virtue of countering most of the strongest Mortys in the game and having few counters themselves. But, Rock is not in the worst state. Scissors types need some help.