Do my views need to perfectly align with every single one of those?

No, definitely not.

When does it become not okay to follow someone?

When their objectionable opinions are pointed out to you and you seem to be basically okay with it. For example, not unfollowing the person, not stating your disagreement with said objectionable opinions, or offering why you think whatever they posted does not actually contain said objectionable opinion.

I follow several online accounts and politicians specifically because I disagree with the content they post.

On Twitter, a follow is viewed as a passive endorsement that you like someone’s content and want to see more of it. You can disagree with this but I think that’s fighting an uphill battle. I mean, it’s 2023, Twitter is two decades old, and as far as I know this cultural more has been true for most of that time.

You don’t have to follow people to see their content, after all. It is a positive act which does mean something, and I’ve described what it typically means in the vocabulary of the Internet.