@three-eyed-crow Honestly? Some people are just unreasonable. Luckily, they're fairly easy to identify - such as when they express distress at other people playing a game, and their opinions can (and should) be soundly ignored, and not used to calibrate any expectations.
As for starring - hmm. I would say that if you are a key player at a climax of a plot, such as using, creating, destroying a McGuffin, or leading a major magical or physical assault against a big bad, or you are the lead negotiator in a diplomatic crisis, things like that 'lead role'. If people can legitimately look around and say, "Hey, this would not have happened if not for X", then you were probably a lead.
And note that my suggestion doesn't involve 'taking away' the lead from anyone - some people are always going to be more proactive than others, and it can hurt to have a great idea for your character to do something and get told, "Hey, we'd actually like to give this to other people, so don't do that thing/don't try to get involved."
But do notice the people who don't ever seem to be the lead, and approach them, quietly, to see if there's anything they'd LIKE to do with their character that they aren't getting the chance to do. Some people, again, are perfectly happy never having the spotlight on them. Some people just don't want to talk to staff, for whatever reason. But people like to talk about their characters, and what they'd like to do with their characters, and I think reaching out about that would translate into a feeling of more joy, and might even lead to some really interesting plot ideas/directions that wouldn't happen otherwise.
Spotlight doesn't have to be a zero-sum game, even when it utilizes a limited resource (GM time).