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Simple: the USA assumes global jurisdiction over anything involving the US dollar and they do not shy away from muscling over US-local branches of foreign companies to get their will.
Constraints foster innovation. If US online services companies were unable to operate (directly or via subsidiaries) legally in the EU market, this could actually create an advantage for EU (and especially DACH) companies. Remember that the US has literally fought wars and orchestrated regime changes to convince countries to let its companies operate in them.
You're not being downvoted because people don't like what you have to say, you're being downvoted because your grandstanding demonstrates a lack of knowledge of basic economics and legal knowledge.
The company at stake here is not Meta Platforms in the US but Meta Platforms Ireland Limited in the EU, a subsidiary. That company exists for tax avoidance reasons but it's the company operating every Meta app in the EU according to its apps' EU terms of service.
How about US companies get to choose - keep abusing the human rights of their users, or continue to operate and do business in a Western market with 440 million consumers.
Of course the CLOUD Act and its harmful consequences to international trade for American online services companies are another topic but I doubt you're defending the warrantless secret surveillance that one enables.