I hate to exacerbate this massive internet pile-on (hehe) Andreas, but I'm both reckless and stupid enough to try and change this myself. I'm on the latest Ventura 13.2.
Now, I've found the location of the frameworks you listed, and I have SIP disabled completely as I figured that would come into it. (This isn't my daily driver either, not that that would honestly stop me). Looking inside the contents of the DFR*, etc framework packages, there doesn't seem to be much knocking about in there, just a couple of small .plists in each one - and while there are a few numeric variables in there, if they relate to the timeout of the Touch Bar's brightness, they're well hidden at least from me.
Now, may I possibly just set what little dignity I have left and beg you just for a tip or two? Like, am I not looking in the right place, or through the right lens? Let's just say one of the entries in the plist was the timeout value - would it just be a case of editing that .plist? As a non-dev, I only have the vaguest, foggiest idea of what Private Frameworks are, let alone how they are actually used. I wouldn't expect them to hold values such as this but you are obviously a world-class expert and that's before I even begin to try to gas you up.
Anyway, it's my birthday on the 19th. I'm going to be 41 and I've achieved precisely nothing with my life, certainly nothing on the order of magnificence as BetterTouchTool and its siblings. Of course a man of my age shouldn't even mention his birthday, let alone on a forum of would-be friends in perhaps the longest shot ever attempted to obtain forbidden knowledge from a Mac guru, so perhaps you might find it in your heart, out of sheer pity and second-hand embarrassment, to let this old heap of human junk find a way to stop that infernal Touch Bar from skiving off its ONE job?! I don't care about OLED burn in, besides the task I want to put it to use for is as a live spectrum analyser (via AVTouchBar). I even downloaded Jiggler, but Apple must be real sadists because they just do NOT want people to have the ultimate control over their machines. It bugs me. In particular because this MBP of mine, that I am now attempting to put to a secondary use, never had a real chance thanks to some really poor design decisions by Apple. That keyboard debacle, the battery has died now as well, and there's some issue with the display.
If I can get the Touch Bar to stay on as long as I - you know, just the person who scrimped and saved and borrowed to buy the ruddy computer, to I am lower than a parasite inside the lower bowel of a worm - like it to, then at least this Mac would go on to have a useful secondary life, as a miraculously pretty looking keyboard. And the Touch Bar would actually make a user happy, I know something that feature hasn't been given the opportunity to do much of, and of course without BTT it basically never would.
Anyway ... I meant to write a longer message, but I hope this doesn't come off as too terse.
Yours only intermittently pleased with my Touch Bar,
Chris