Have no doubt hat Amazon is using every bit of information you give Alexa to sell you stuff, or is in turn selling that information to others.
Of course they are. It’s all about monetization. I’ve been known to amuse myself online by visiting wacky sites just to see what sort of crap Google AdSense will place ostensibly to advertise to me. Pretty comical actually, but if anyone is keeping a “dossier” of my online behavior they’re going to think I’m one strange duck, lol.