These are just my opinions from my perspective.
As a millennial my self. I will Turn 40 at the new year.
The amount of ppl my age and younger that have 20ga sxs is alot. I have met tons of ppl with cz bob whites and sharptails. Some have skbs and others may have a stoger. But there are alot of with newer cheaper Sxs
Me and my wife went to the great north shoot in medford this year.
Me with my bss and her with her japan built skb. Definitely on the newer end of the guns there. Both ours are from the 1980's.
On reason most of us millennial buy newer guns, is the ability to have chokes. And the ability to shoot steel.
Alot of us also bow hunt. And when we rifle hunt for meat, we do so with copper. We dont have a problem slinging lead down range. We just dont want to eat any of it.
Yes my bss and wifes skb dont have chokes. The prices for these were hard to pass up. Would prefer chokes. But funds aren't unlimited
Most ppl my age or younger dont have collections of guns. It not financially feasible for alot of us. So we pick fewer guns to cover more things.
Quailty vintage guns cost alot. And limit us to extremely expensive bismuth shot if we want to hunt. And with the fix chokes. Which does limit to a degree what is capable with one gun. They are a hard choice for us pick. Most the guns that cost the same as a cz are usually not in the best shape and need work, that add so much cost it doesn't make sense to buy them.
Have also met a ton of ppl that got in to guns since covid. Big group of these ppl make really good money. They dont have problems ording a semi trailer full of shells. Or 4 spolars and a couple pallets of loading supplies in one fell swoop. Custom ordering high end shotguns or rifles or pistol is a monthly thing. Not a single one of those ppl are over 50. They didn't grow up hunting or fishing. The dont have the nostalgia for old guns. The ones that do are into anything retro in gental, aka modern hipsters. Driving a jeep grand wagoneer from 1968 and guns from "before the war". Rich kids cosplaying as workering class boomers from the 1970-80's
And there is also upland hunting. So few of us have. We have turkey or dove hunted. But the birds just aren't were they used to be.
So many guns have pheasants and quail. The staggering amount of ppl i have met in the clay field under 40, that have never seen one in the wild. There hasn't been many if any wild upland birds in indiana in 20 years. It all raised bird hunts on private land. So many of the older guns have birds that we have never gotten to hunt. Why would we be enthralled with them if they things on the sides, we have so little access too. I have seen alot of younger ppl turn off by the bird engraving. My self included.