"If you expect US companies to respect GDPR and cookie banners and the right to be forgotten, globally; you cannot be surprised that they will respect and enforce US law globally as well."

I don't expect any US entity to "respect" GDPR. Unless they are expecting to trade in the EU. If you trade in the EU, and violate EU law, then you can expect to be fined - wherever you choose to locate your HQ.

Incidentally, GDPR is pretty badly flawed. The intrusive cookie popups are an egregious example of unintended consequences - those popups are actually attacking privacy.