@Acciocookies Do I look like I'm joking? Angela is a complete terrible character, what good has she brought to the series other than crying her eyes out? (something everyone loved), Vecna started S4 by killing innocent teens, hes one of the reasons that the series became interesting and that Max and Lucas could reunite again, hes the reason why El finally got her powers back, Brenner is one of the reasons the series started, if he didn't kidnap El then she prob wouldn't even have met Mike and they wouldn't have found Will and known anything about the upside down and there would be nobody to stop Vecna. Billy being a bully was helpful given that he knocked Steves lights out and because of that the kids were able to steal his car and kill the vines, and he gave the Mind Flayer a perfect vessel, Grigori gave us epic 1v1 spars between him and Hopper, I mean who doesn't like action? and If he wasn't there to stop Hopper from shutting down the machine then they never would have traveled to Russia and they never would have killed the Demodogs, Demogorgon and a part of the MF which kind of helped the Hawkins gang beat Vecna and allowed Dustin to have his final moments with Eddie hell they might have even saved Dustins life cause the Demobats might have killed him. As for Jason, if he didn't exist then Eddie might have never Joined the gang to kill Vecna and he would have just stayed in reefer ricks house, they probably wouldn't even have made the plan cause Dustin couldn't fight Demo-Bats all on his own hell if they weren't looking for Eddie then Dustin never would have thought of the gate theory and Nancy never would have seen what Vecna showed them which kind of gave them a headstart.
They are way more relevant to the plot than Angela, their characters have meanings while Angelas doesn't, see how Angelas character is shit compared to them?