From the perspective of the user, frivolous (and hostile!). The present state of affairs serves us well enough, and we can gauge how many sites would casually increase surveillance by eg the trend of rejecting mailinator addresses.

There's this gravely mistaken idea that a business's interests are fundamentally based on serving customers' interests. But both sides of any transaction have diverging interests, and in the real world we see industries uniformly implement arbitrary customer-hostile practices rather than compete. This is especially true when the customers' downsides are not easily quantifiable - see the entire advertising-surveillance industry.

And sure, there is always some prudent-sounding reason why more centralization is needed (essentially the "God narrative"), which is exactly why the safety-above-all ratchet moves ever forward. But in the free world this type of thinking is a red herring - the same scare-reasoning can be applied to mandating that every person have a machine-readable ID code tattooed on their forehead, and this only seems unreasonable because it's not present custom.