Who sets the "bar"? Who defines "baseline acceptable for town"? You? The point is, reasonable people disagree about how to play the game. You might think self-voting is unacceptable while others find it perfectly legitimate. What gives you more insight than others?
I don't think you (or anyone) knows what's optimal or unacceptable. Mafia's too complex. In the post-game, it's easy to point at behaviors/actions that cost the game. But while the game's ongoing, nobody knows shit about what's optimal/unacceptable. How do you know that lurking, sheeping, self-voting, fakeclaiming, or lying won't work out this time? Different setup, different circumstances, different players -- all these things might change whether something works or doesn't.
So I don't think it's fair to PL someone for deviating from your idea of what's acceptable. I apply a simple (non-arbitrary) standard: If someone's making a good faith effort to win, don't PL them. They might do something you dislike but that doesn't mean you should punish them for thinking about the game differently than you, especially while the game is ongoing. Post-game, you can discuss all you want. But until the game is over, nobody has absolute knowledge about whether it's the right/wrong play.
The strongest players I know don't bat an eye at self-voting or lying. Most of them partake on occasion. So the idea that stronger players don't engage in these sorts of behaviors is demonstrably false. If anything, it's the players who never improve that limit themselves in this way. After all, how do you expect to improve if you put yourself in a box?
You attack my play as suboptimal. So what? Do you PL someone anytime they do something that you find suboptimal? I'd hope that you at least have the humility to recognize that just because you think something's wrong during a game doesn't mean it's actually wrong (this turns out to be the case with reads quite often, for example). I usually get called "bad," "horrible," "atrocious," etc. during games by players who later call me "amazing," "GOAT," "MVP," "god tier," in the post-game. What's happening there? Incomplete knowledge shades how you view things.
And that applies anytime you're pushing a PL. Incomplete knowledge shades everything you do. I'll also note, pushing PLs gives control to the scum because they easily avoid them when in games with you. It's also too easy for scum to push mislynches via PLs. And at the end of the day, it's always possible to distinguish town/scum regardless of what behavior someone's engaging. I usually love when players lie because it's easy access to their motive (why'd they lie? was it to further scum agenda? if not, they're probably town because scum don't lie without reason to do so).
For what it's worth, I have roughly a 75% win rate as town (if you include alts) so I'd say I'm doing pretty well with my chosen tactics, including lurking, sheeping, lying, fakeclaiming, and self-voting. While people might dislike them during games, nobody questions the results afterwards. I hope that you will revisit this in the endgame as well instead of attacking it with incomplete knowledge. I also hope that you revisit your view on PLs.