This wouldn't be an issue if you understood and expressed that there is some difference between "best" and "favorite". You're the only one here trying to deal in absolutes, no one else has said they are 100% mutually exclusive in an absolute way. I never said that, I said what you said was very obviously wrong because of how you put it. And it is, it remains wrong.
It's very obvious that there is a difference there, both colloquially and definitively. The examples I've used, which you have specifically avoided directly responding to, illustrate that pretty clearly.
Yes, and you are wrong. That doesn't mean you have to like Shakespeare, but you failing to understand why and how Shakespeare is a great writer is your problem. This isn't about objective/subjective, this is about understanding. And that would be illustrated by the arguments in support of those statements, either "Shakespeare is bad" or "Shakespeare is good".
I'm not going to write a whole dissertation on why you are very clearly "objectively" wrong in your statement that he's not a good writer. I mean I could link some papers & projects by comp lit experts... but regardless of whether or not I take the time to do that, the only point that matters is that those two arguments/"opinions" are not equal when it comes to "best" because of the nature of understanding & expertise. "Best" means something. It doesn't mean it's 100% opposite of "favorite", or that it's 100% "objective"... that's not how language works. But it does mean there is a significant difference between those two things, generally speaking. I don't know how that isn't really obvious.
We are at an impasse. You don't understand what objectivity is. Period.