I’ve done this occasionally with youtube reviews for tech purchases.

Seems illogical, to your point, as the purchase is already made, but I’m no longer looking at the reviews to make a decision.

I’m looking to:

A) Maybe find out some cool feature I didn’t know about, so I can get the most out of it

B) Get HYPE because I’m excited about it!

So not as illogical as it seems :)