why do some blackjack games let you resplit aces.

so i’ve noticed a few places offer the chance to resplit aces and some just shut you down after the first split. never totally figured out why they care so much about stopping players from splitting them again. feels like it wouldn’t really break their bank if they let it ride. some pit bosses have told me it’s to keep things “simple” but i’m not sure if that’s the real reason or just something they say.

i see a lot of people hunt for tables with that rule. does anyone actually have stats on how much it changes the house edge? maybe i’ve been missing out by sticking with the regular rules all these years.