That might be true for your game, certainly no one has "seen" you play more than yourself. Big picture at or near 12 oz isn't that much different than 11.3 ounces, if one is good enough it wouldn't ruin the day playing with one or the other for most.
I'd like you and maybe some others though to listen to this thought process and critique my thinking:
So, I've never tried to led up a stick, but I once tried to use the RF for doubles, quickly finding it not that amazing for singles after about hour 3. Like someone else said, an ounce isn't that much weight difference, but to boom stick my first serve with the heat blaring down on me, I felt like it was heavy after a few hours. But, like everyone here I like discussing rackets.
The theory is this: The video that by now some could say I am obsessed with, this is why I keep returning to it. Is the video an economy of thought, the most bang for the buck opinion and research on what 99% of us players should be using, even if we don't at first think it is right for us. In other words here are the two opposing thoughts:
1. We are gifted a longer interview from a "guru", yes he strings at the US open, has been in business for over 2 decades, has watched more recreational tennis than any of us, and has been paid by people who also know more than we will ever know about tennis to tell them what to play with (ATP Pros). He thinks for rec players 12 oz is too heavy and probably anything inching up to it, I bet he would say 10.5 to 11.5 ounces is the sweet spot for rec players. He admits the RF is the best racket we could use, for half an hour or for sporadic moments, but for every point in a few hours of a match, no we can't use it. Neither can "the wall street guys who used to play college and are now 5.0" that he sees everyday. He also mentions they all argue against his advice until they finally take it and then they thank him.
2. Then we have each of us who thinks we know our game and what is best. I would not trust myself to know what is best for my game.
Obviously quite a few people like heavier sticks, but do they know what is best? You might think they should, I mean they are the ones playing,, but who knows for sure.