To me, sure.
Disagreements are had between mature adults in the open market place of ideas. Some are intellectual, some of not. Arguing the virtues of free speech vs hate speech laws between two established “intellectuals” is a disagreement. Two people arguing where Tom Brady is better than Payton Manning is a disagreement.
Infighting would be more along the lines of immature contrarians cutting of their nose to spite their face. For example, @anon50325502 and I pretty much see eye to eye on civil rights regarding firearms and abortion, but he refuses to accept TB12 as lord and savior. If I were to take his blasphemy so personal, that I started to argue a position opposite his on civil rights and abortion, because I now see him an an enemy of mine, and I can’t let him win, that would be infighting.
Sort of like the two parties in the US spend an awful lot of time spinning and counter spinning everything the other party does into “the most worst evil mankind has ever thought of, literally Hitler”. Well that kind of bullshit is expected between two parties. If that kind of attitude starts to happen within a single party that is infighting. However two dems having a conversation about whether to try and ban all guns vs trying to ban just rifles is just a disagreement. Taken to a higher level, Dem A could want a total ban, and Dem B could actually be in favor of civil rights, and they can discuss why each other is wrong, even argue. But at the end of the day they are reasonable and leave the disagreement at that. Infighting would see that fight spread to other issues they otherwise agree on…
I agree with you that it is an unacceptable way to govern.
However I understand that is how a lot of representatives govern. So because reality dictates that is how some people will vote, it matters when discussing whether a party was unable to pass, or refused to pass a bill.
I don’t know what my opinion on that question is, haven’t spent enough time thinking about it.
I am of the opinion that the tribalists of both parties are different in how they handle governing. Those on the left could disagree about 99 issues and come together over the one issue they agree on to support a candidate to a much higher degree that those on the right. While some on the right will, it seems those on the right could agree on 99 out of 100 issues, and spend a lot of time on the one issue they disagree on and ultimately not support a candidate they otherwise like.
I’m speaking in general terms here obviously. And depending on your perspective I could argue both as good or bad.