Yeah, I really don't get this meme. I hate that it seems like they're gonna be making it into a full arc too.
Eclipsa and Meteora got fucked over by the MHC, that's without dispute.
But it's been 300 years and things are vastly different. Meteora is fucking crazy now cause of her fucked up upbringing so she's clearly not fit to rule, and fucking everyone wants Star to be queen.
There's no point to have Star go through some silly "oh, I'm not royalty at all, I don't deserve the wand or Mewni, here obvoiusly crazy monster baby, you take the wand" arc that'll just end with them going "wow, the thing that really matters is your actions and personality, not your lineage"