when they should be happy since these nobles known how to lead
Do they really? Here is where American prejudices might blind me to cartoonish versions of same by the American authors, notably Flint himself. My expectation is that aristocrats are at best par for the course, some are statesmanlike, others are idiots. A system like the British one (which here is still just English) where the "nobles" are a collective of gentry, who operate in their special status via belonging to a special class with special roles in general governance of the commonwealth as a whole, but don't get devolved major powers of autonomy in their own personal right (they might say have a lock on being appointed Royal Justices, but the point is they hold their regional magisterial power as a gift from and as agents of the King, or King-in-Parliament, not by personal right, might be put forth because the nobility and monarch are pruning the bush as it were, electing the more competent among themselves as consensus agrees and putting the idiots out to pasture as landlords and not much more.
The German nobility as portrayed (I can't be sure how accurately or otherwise, but it seems plausible for this region) are more like medieval lords--each one a petty monarch within their limited territorial sphere, having obligations to peers only in the sense of being part of a branching fractal hierarchy of lordship. But at the bottom of the ladder, we have individuals who regard themselves as having quasi-kingship over their handfuls of subjects. A system like that is bound to produce various forms of local incompetence without much check on it if any, which would be much resented. Peasant revolts were a thing throughout the Middle Ages and into this period, for reasons--the American message of "no nobles no kings" would resonate among fair numbers of people, more so in places with particularly fat-headed lords of various types--some just stupid, others grasping, others cruel or over-ambitious.
I do think the later books do a fair job of showing individual nobles who have various virtues--some remain class enemies of the commoners but astute enough to play the game by the new rules, others are shown as having humane virtues and indeed delivering a bit on the premise of
noblesse oblige. Hence the third constitution if I counted right in which Grantville and Magdeburg permit themselves to be incorporated into a system recognizing noble classes; to maximize the spread of the fundamentals of uptime democratic liberal humanism, the uptimers and their far more numerous downtimer radical enthusiasts compromise a bit.
I can't agree, only agree to disagree, with your apparent advocacy of the notion nobility is actually a good thing. That it can be tolerated and worked with, if suitably checked by democratic power to override it when it goes bad, I can accept. I don't think Americans or people living in Latin American republics would be better off with a formally categorized gentry; the power and irresponsibility of our informal aristocracies are quite bad enough.
I’m like why you just got out of a battle where you almost died and your just a town and you refuse to join someone because of monarchy come on irl if that happens you will join
Depends. If at all possible--no I wouldn't want to. What I
might want to do is what they do, which is assert a strong and cordial alliance with a "good king," if he doesn't seem hellbent on subjugating my fellow citizens sooner or later.
If my ISOTed community is fatally weak on its own, doomed to succumb to one conquering king or another, yes, we have to pick the least bad one and suck up to them. Or if one gets there firstest with the mostest and himself demonstrates overwhelming force, welp, we are conquered and perhaps must make the best of it. But these would be unfortunate outcomes.
The USA as an independent nation was founded on the premise that we don't need lords or kings. Submitting to a noble/monarchial regime is a defeat and out of grim necessity, not because people ought to be part of some aristocratic hierarchy or other.