The digital detox narrative posits there there is no problem with BigTech companies, and they do not need to change. Instead the problem is how much time you spend engaging with their sites. "Screen time" or "online time" versus "offline time", as if it was still the 1990s with a clear division between those things.
This is really individualization. Pushing systemic problems made by organizations onto individuals who did not create those problems and did not ask to be subjected to dark patterns or harassment or manipulative advertising.