im not left, im right as fuck, but:
if u are talking about ethical part of google's actions, i think intervening to the google's servers and deciding how they would work, while not being an owner of these servers, is much less ethical than giving google a right to decide what rules are ok on the servers they own.
if you want to make google feel worse, but you dont want to do unethical actions, you can do the way i did: i just stopped using google, because of their actions. atm the only search engines i use are duckduckgo(for international search) and yandex(for local cis search on russian language), so you can switch to duckduckgo.
if its really essential for ppl to have free speech google, a lot of ppl would stop using google. and google will see, that their income has decreased a lot, and after that they will change their policy. if you really want to make world better: stop using google.
As Quickseller already stated, they are in violation of existing laws. They have to either be a public commons and allow all legal posts, or a publisher which can curate posts as they please but are also responsible for what is posted. They can't be both. I agree with your premise of not using their services, but realistically that is nearly impossible unless you are Amish.
as i said, i was talking about ethics.