> Same thing for a lot of sites, probably the vast majority of them.
Once Google gets this in place, it can then perform these checks through their ads SDK and demonetize traffic from visitors that don't pass the check. This will create an incentive for any site owner that wants to make money through ads to enforce that visitors must use an approved browser. Basically the DRM equivalent of 'Please disable your ad blocker'.
The bigger concern for me like you call out - major institutions like banks enforcing a separate company's requirements on me in order to interface with them.