The libs have finally learned a new word! Just like tankie it’s actually an old word that gets misused, but they have learned a new word! Looking forward to seeing it everywhere.
If you don’t believe me then check the modlog: This meme got removed for being “campist” 
They’re using it more and more
Campism is mostly associated with Trotsky’s commentary, and the way that he used it is not very much like you describe.
Can’t believe I would ever consider suggesting someone read Trotsky
I don’t think there’s anything wrong with it. I haven’t read a ton of it but I’ve read some, and even the most dedicated Trotsky Hater himself had a fair amount of Trotsky’s writings in his personal library because it’s important to know your enemy. All the more so today in the west, where the Trots are such an over-represented voice in nominally-communist political commentary.
I know you’re probably joking, I just wanted to mention because others might take it more seriously.
No, campism is not from Trotsky, but Trotskyists have a developed criticism of it, because of the Trot tendency of “third campism.”
When there are two sides to a conflict: One, imperfect but on the side of decolonizing struggle, and the other side, the colonizer. Trotskyists, as left-critics, will find a position outside of the two “camps” and choose another camp: the camp of the revolutionary proletariat.
Sounds nice until you realize that Trotskyists, though maybe not Trotsky himself, have now occupied an idealist position that presupposes a verifiable basis for a left criticism. Both Trotsky and Fanon have proven the international struggle is only possible through national liberation struggles. But American Trots had to be told explicitly to side with workers rather than oppose legislation that would send them to war; and then over corrected and embarked on various adventures of entryism.
Campism is just like, applied phenomenology. As Marxists we have to avoid getting caught up in rationalizing or steel-manning, and just go to the source of the real struggle. It’s interesting how recent events have shaken some Trot tendencies out of their weird sectarian positions. Anyone who tried to third camp about Hamas and the Gaza genocide was completely delegitimized. Other stuff, like “the Epstein files” have also led to the Sparts finally shaking off their disgusting legacy of defending Roman Polanski and age of consent discourse.
But yeah if its not a useful term for you in the spaces you work in then w/e. Just sharing perspective from someone who has gotten to participate in a lot of these discussions.
But all in all, it’s just dialectics and class antagonisms. I’m not describing anything that isn’t explicit in like the Eighteenth Brumaire or The German Ideology.