In fairness, the Expanded Universe in Star Wars also featured a return of Palpatine. He could transfer his soul to clones. Luke with the help of Leia slices him up real good though and puts an end to that.
Dark Empire was also widely criticized for it and was considered one of the bad EU arcs.
Disney took Dark Empire and made it boring and stupid.
That, and a cyborg jedi basically intercepting Palpatine’s soul in order to avoid having him possess Leia and Han’s newborn son. Not to mention a treacherous guard having his clone supply tampered with.