I did not say the EU forces Meta to ban it; perhaps you should re-read the comment.

It does impose significant compliance burdens with massive fines.

You have to report who paid for the ad, where the money came from, what political process it relates to, you have to do this through the entire chain (i.e., ad agency, ad exchanges, publishers), you have to attest to the ad's accuracy, they have to publish all the information through a central EU repository, they are not allowed to use any person-level ad targeting, they have to track whether it pertains to any active EU bill or legislative process within three months of decision-making and, if so, they have to attest that the entity and funds come only from the EU (not just directly, but indirectly).

The penalties for mistakes are enormous. The act allows penalties of up to 6% of global revenue. That's around $10 billion for Meta.

I'm pretty sure I would make the same decision when the EU is threatening to fine me for $10 billion for making any mistake on the rules for the TTPA.

The concern is not that you make a mistake. The concern is that you absolutely cannot trust a significant portion of the advertisers who would be your market for these ads, and who would cheerfully hammer you with attempts to get around compliance until they succeed.

These are also the folks this law is actually aimed at. So mission accomplished...