It's not even from Chapman's hat. Or any hat. The back of the card explicitly states that the relic is specifically manufactured for Topps to use - you can see some of them on eBay. So I wouldn't even call it memorabilia. In fact, it's denoted in the Database (or should be, I haven't checked to see if it actually is) as "MANU", for "Manufactured Relic".
And yes, Topps has been doing this for a while now. I can remember at least 2011 with the Throwback Patches. It's not what I consider fun, though if you're a player collector and lucky enough to pull "your guy", that's probably a thrill. I never seem to have that luck myself.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.