Where are you pulling these stats from?
It's anecdotal, if that's what you are asking. Repeatedly in my interactions in real life and online, this is what I almost always see. Even the most ardent of young fans of the new Star Wars are not hardcore like the older ones in general. The old ones go crazy about Baby Yoda for example, go and buy all the Baby Yoda Merch such as the stuffed toys, the plastic toys, the games, etc.
They buy the new books, they spend money on so much of the new Star Wars stuff it's insane.
I just don't see the younger generation doing that. I've seen one or two at the pictures of conventions (where you have the hardest of the hardcore), but in general, none of the younger generation (which, I admit is mostly my grandkids, their friends, and their friends, friends, along with those that I see or meet on my trips and travels, so employees, etc) I know personally or have met commonly are like the older generation who are fans of the sequels.
On the otherhand I see a LOT of the younger generation (and it's possible that since they grew up with the Prequels already existing, THAT IS part of the Star Wars) that are fans loving the prequels. The MOST COMMON complaint I hear about them, and their comparisons and statements on the Sequel Trilogy deals with how the prequels were not respected and various other things. Those who are young seem to have a great favorably opinion of the prequels (and the Clone Wars cartoon when they have seen it, that tends to be the older ones of those under the age of 25, as those under the age of 13 are less likely to have seen it and remember than those older than that).
The Older Generation tends to focus more on the Original Trilogy and if they do not like the Sequel trilogy seem to talk about it not respecting the OG, rather than the Prequels.
It's also the older fans who I've met who dislike the Prequels so much (and some of the younger ones I've heard blame these older fans for driving George Lucas to sell Star Wars due to how much flak he got, the abuse his kids got, the abuse the actors got...etc...whether that opinion is true or not).
On the otherhand, the MOST BITTER people I've met towards the Sequels are ALSO the older generations. Some of those you would think you tortured and killed their family and dearest friends with how they react towards the Sequel Trilogy.
So, yes, anecdotal, but with a wide range of groups I have interacted with that have given me these impressions.