Where does it say that it stops at that?

& no, it isn't $256K for just a browser extension, read the proposal, maybe you will see what every single cent is for.
With full backing up of all costs and proof of pricing.

However, you are entitled to an opinion, even if every single fact stated is backed with cold hard proof and justification.

PS. "Tokenizing the internet" means that we tokenize the internet and people have been known to use browsers to surf the internet.

You can't tokenize the internet without the utilization of the tools that people have for surfing the net and using the sites that they use.

Cheers.