I don't really thing that's necessarily true. I think they wanted that fandom they just underestimated it. I think there were three problems with the way they handled Star Wars. The first is that they tried to pander to the nostalgia crowd versus making something unique and fresh. They were so terrified of a prequel scenario that they failed to account for the fact that barring the toyline crash after TPM the prequels found ways to make money, and they eventually found their fanbase.
The second mistake is that they underestimated the main trio's popularity. Star Wars is probably the one franchise where the villains and enemy faction is, on the surface, more popular than the heroes. And barring merch with the film posters you just see much more falcon/Han, droid, and Yoda merchandise. It's really easy to underestimate Luke's popularity. Luke seems like he's just buried by villain, droid, Yoda, and Han/Falcon merchandise is so incredibly fucking popular and they just did not fucking realize it until it was too late. Like sure he does get his fair share of shit but it's not on the same consistency as those things so it's easy to look at things from a distance go "Well as long as we have a fast pace, Han, troopers, and a guy like Vader fans will be happy!" and that backfired on Disney because people care about Luke. They love him
The third is that there's this misconception that Star Wars is sci-fi for idiots, that it's fandom is made up of really dumb fucking people that will eat any slop tossed their way while complaining non-stop about it and Disney bought into that misconception. They thought they didn't need to plan, or that Star Wars fans would just suck from the tittie no matter what milk came out and it really fucking backfired. Also Disney buys into outrage marketing but outrage marketing is a double aged sword and this time they got cut. It's not like they actually mean the "The future is female!" bullshit they just want to cram cows into seats