Cheers, holds hands and let's go over the rainbow, looking for pots full of golds and unicorns. Free cacti for everyone!
Adding in an actual Legendary kind of says, "Yeah, none of you are special. Pretty much anyone can do it if they try. But I actually am special."
IMHO that's actually opposite- there's nothing special about being born powerful, while forging oneself into living legend despite everything is completely another story.
I frequently compare Goku and Co. to Tiffany Aching from Wee Free Men. Tiffany is one of the strongest and most effective young witches- but after long years of training she learns that she didn't have any power to begin with. Other witches were born with talent, while she "forced" the talent to appear within her because she decided that her village needs one. Similar for Goku and Vegeta- they needed SSJ and they didn't wait, but become ones, not knowing that it should go other way around. I think I like it, it's pretty inspirational for kids.
For all the talk about obsessive Broli fanboys, I don't think I ever actually see any of them. Maybe I don't get around enough, or maybe I just don't pay attention. So I don't think that's really a factor for me.
Because they are fandom subspecies of Yeti- everyone talks about them, but the living one has never been captured to prove their existence

There are just us, who calmly re-watch Movie 8 while having hibiscus tea and scones.
Man, I love all those Brolly's threads, they are full of thoughtful, elaborate posts and the most peaceful discussions on this side of 90s nostalgia gropus.