If the extra weight (if any) is all at the rim then maybe worth a mention, I suspect any weight difference is at the hub which may affect the un-sprung weight but not that the average rider would notice.
If we are going to get al techy about rotational forces, un-sprung weight, rolling mass, gyroscopic effect etc. then we need to ditch the big chunky tyres for a start. That's where the foreseen problem would lie if any.
Just remember a few years ago the big players changed to 16" rims for better directional changes, they weren't long changing their minds back to 17" as the bikes became too twitchy and unstable.
I say be carefully what you wish for, as you get nowt for nowt.