If we're following Marx's historical materialism (that society has transitions has a society, roughly being feudalism -> capitalism -> socialism -> communism), I think the next best step is a transition from capitalism to socialism is union ownership. Personally, I think worker co-ops and general syndicalism with a competing in a market for the worker owned businesses would be a great in between step that would not involve a crushingly oppressive state. The goal should be to keep it decentralized so one power structure being consumed by corruption doesn't sink the fleet
Achieving communism thru the state (called vanguard parties) isn't all that well liked by many types of socialists and communists, especially those of us in the west. A lot of us prefer to take inspiration from mid-1900s labor groups who, while not achieving socialism that we want, created infinitely better working conditions and power dynamics for working class people. Most of the people who ran those organizations were socialists/communists in and of themselves, and they often times relied more upon collective direct action than just electoralism.
The concept of having third party "trusted" attesters just screams abuse, corruption, and data selling. What would their business model be? Direct payments from browser companies? Selling "anonymized" data? What if their data security is crap it just ends up being another vector by which leaks and scams can happen? I doubt the average web user is going to understand that all of their data is going to be going thru some man in the middle when they Google something
What about competition? What if attester A has major ties with Microsoft edge and decide to block Firefox users? Or what about smaller third party apps that are made for accessibility reasons? Or hell - what about startups that are trying to enter the market?
The only reason these attesters would be trusted is because the large companies say they are. Theyd be completely at the whims of Google and Microsoft. What a stupid fucking idea with little upside for the end user