It wasn't until many, many years after I experienced my first section diva that I made one ridiculously simple observation: Section divas simply do not see themselves as being a diva! Well, then, of course they didn't "just stop" being a diva. They didn't know they were being perceived as such in the first place!
You may find that if you ever accuse someone of being a diva, they will always deny it vehemently. And they're not lying either! Most of the time, they mean it truthfully (unless, of course, someone is really just being an entitled idiot... that's a subject for a whole other post...). And just how can they mean it so truthfully when their actions seem to say otherwise?
It's as simple as reframing the story. The same words and the same actions can be interpreted wildly differently between two human beings! Just because you had good intentions doesn't mean it actually came off that way.
So how do you solve this problem? Another ridiculously simple solution: You talk it through.
No matter how awkward it gets, just talk. Trust me, it's worth every bit of cringey stuttering to get everyone on the same page. You realize that these people you're making music with most likely aren't out to get you. And you might also begin to find value in less experienced players who are learning from you.
Communication is key--after all, music itself is a form of communication. :)