Funny, as years pass by I slide more and more towards the opposite. For most aspects of readability people discuss, there are objectively correct choices, with some leeway for the specific circumstances.
Code that interleaves high and low level concerns, that has a lot of variables used all over the place, is deeply nested, etc. vs code that is modular, keeps the nesting shallow, splits up the functionality so that concerns are clearly separated and variables have the smallest scopes possible.
One of these styles is better than the other and it's not subjective in the least, so long as you're a human. We all have roughly the same limitations in terms of e.g. memory capacity so ways of programming that reduce the need to keep a lot of stuff in memory at a time will be objectively better.
> I've reached the point where anyone who claims some style is "more readable" without adding "to me" I just start to tune out. There's very little objective truth to be had here.
Adding qualifiers all over the place is just a defensive writing style, best fitting online forums like this one where people will nitpick everything apart. However, it's not reasonable to pay so much attention to someone's particular word choices.
Objective truth is very easy to find actually. The problem you're solving is objective and the desired outcome is too. It's just a matter of analysing the problem space to find the correct design. The feeling of subjectivity largely just comes from the high complexity of the problem space.
> If on a team and you're the outlier, suck it up and conform.
It's way more complicated than you make it sound. It's entirely possible the entire team is wrong.
A general strategy when joining a new team is to follow what the team does exactly and not attempt to make changes until you learn why the team does things the way they do (Chesterton's Fence). Once you understand, you can start suggesting improvements.