After Apple dumped Parler from the App Store, A piece of fake news was immediately circulating telling people to "turn off auto-update" on their phones to "prevent apple from removing Parler". After Apple fell for the fake news that the attacks were planned on Parler (they were planned on Facebook), their predictable reaction seems to have played right into the hands of attackers. Fascinating game of chess, but unfor…
Apple isn't going to stop enforcing their content policies just because someone chooses to lie about auto-update. Parler absolutely did play a role here due to their repeated and documented refusals to abide by terms and conditions and Apple isn't to blame for rumours that bad actors choose to spread.
You're suggesting that they should refrain from regulating one bad actor which they do control because they would then somehow be responsible for the actions of bad actors which they do not control.