I only drop characters if I feel like they're trash after playing them for a while even though I like them. I dropped Ryu in SFV S2 for Akuma and Skarlet for Scorpion in MK11.
I wouldn't drop a character for being perceived as too strong, though.
I dunno who would think RoboCop is too strong though, lmao.
If you're a Jacqui, Joker, Sheeva or Liu Kang player just embrace playing a braindead top tier character. Many people will consider you a carried scrub and hate you for it, but it's not your obligation to please other people. Other people get paid to fix the game, and them not doing a good job at it is not your fault.