Do symmetrical pawn structures favor knights over bishops? Why?

Sort:
AWightKnight

In this position (assuming I added it correctly) an opening book by Larry Kaufman says: "Black is better. The outposted knight is clearly worth more than the slightly bad bishop. The symmetric pawn structure also favors knights over bishops."

I don't recall ever hearing before that symmetrical pawn structures favor knights. Would anyone care to verify/disconfirm, or explain why this is/isn't so?

ChessMasteryOfficial

In many symmetrical, closed positions, knights tend to be more effective than bishops because their mobility isn’t as compromised by locked pawn chains.