> regardless of whether it has the same intent or potential effect.
I disagree, and I think I'm in the majority to have more outcomes-based ethics [1]
What I'm trying to get across is that you are "politically active", whether you think you are or not. "Activism" can literally involve just a bunch of friends on an online platform upvoting and downvoting. Even just a small group of people doing this can even be effective censorship in certain contexts, such as local elections. Sure, Google may have more cost-effective means of censorship --- larger political campaigns have to pay firms LOADS to bury stories or control online discourse without access to the power Google has --- but it's still the same result, just a matter of who calls the shots and cost-efficacy.
You might argue that controlling discourse like this is not censorship or unethical based on your definition, but as you said it can have the same intent and has the same potential effect, so to another perspective, perhaps one that places less value on the USA constitution, it most certainly is.
[1] About 90%, in the case of a survey question about the trolley problem - https://en.wikipedia.org/wiki/Trolley_problem#Survey_data