If Meta and Google had to provide actual support of the kind you describe to non-paying users, they would not be able to run their operations at scale. When the number of your users runs into nine or ten figures, even tiny error rates in your automated algorithms mean large numbers of people are being erroneously banned, and that is simply unfixable because your being able to operate at scale requires almost all of your processes to be automated. Having humans do them is simply not possible.

The only way I would ever see this getting fixed would be for them to abandon the ad-supported business model and actually charge ordinary users for their services. Whether you like it or not, "you get what you pay for" is a thing. If you are getting a service for free, you actually have no right to any kind of support. You just have to take whatever you get. Yes, it sucks, but unfortunately the only way to make sure you aren't a victim is to not trust anything you care about to these services. Which is why I don't.