[Spoilers C4E18] Has this already been covered?

WTF with crits? Have the rules changed in 2024? For example, Vaelus rolled a Nat 20 but rolled twice the number of dice, rather than doubling the dice total??

1d10 possible max is 10

3d8 possible max is 24

1d6 possible max is 6

Total possible damage is 40

Doubled is 80

Vaelus just rolled twice the number of dice...???