There’s definitely more custom elements than there used to be, I’ll give you that. I bought 6KG of used LEGO on eBay a while back, and there was a good pile of pieces that definitely had limited reuse potential.
https://medium.com/p/793f83f997af
Some new custom pieces can trigger new creativity though, like they did with some of the Botanical sets, so it’s not all bad, but I agree that huge size, custom pieces and display sets is not a combo I can stand behind. Looking at the Mighty Bowser for example launching next week, it looks really cool, but I can’t justify myself buying it. You’d have to be an absolute Mario nuthead to wanna buy it.