Doesn't meta have an obligation to product users that do want to use their product? This is like saying people should be free to pee wherever they want, if you're worried about the smell, don't walk there.
Actually, the pee analogy fits better with your argument. You’re arguing that people can siphon electricity and use meta’s servers without paying (via ads).
As I’ve already mentioned, meta isn’t a utility that people can’t live without like a phone. If they don’t like it, they should use something else. There are many alternatives