Being an industry plant used to be an open concept that proved to be a highly successful formula. New Kids on the Block were basically engineered from the ground up, same for NSync, Backstreet Boys, One Direction. So by default, many solo careers are owed to this idea.
At some point, the term became pejorative and listeners/fans took it as a slight that their tastes were somehow being spoon fed to them via synthetic methods.
I don’t mind it either because not all artists can truly be organic. People in the industry have visions for an artist just like artists do for a song. Whether they’re a plant or not doesn’t take away from the fact that they have talent,