I'm not on Googles side here, but... As nice as your sentiment is, there are plenty of real problems which have to be addressed.

Who defines, and what are the definitions of "Large" and "General Purpose" in this context?

Am I allowed to moderate content as fits with my ToS at X number of users, but at X+1 users I become forced to publish all content which is "not otherwise illegal"?

In regards to what is "not otherwise illegal", which laws from which country apply?

How does one combat things such as excessive spam? If I am forced to allow any content which is "otherwise not illegal", and my service becomes literally unusable because of someone posting 10,000 cat pictures per second (cats aren't illegal, I'm forced to distribute the cats), what is my recourse? Am I still allowed to rate limit? Because that, boiled down, is censoring a users ability to post "otherwise not illegal" content.

Why should they be forced to distribute it? That's a pretty extreme stance, and you haven't provided a reason.

It’s hard to make a free speech site whose content guidelines follow the First Amendment, because the credit card networks will ban you. Gab, for example, can only accept checks and crypto.