First of all, I wrestled starting in middle school and wrestled all the way through college. It was D3, so not of the highest level, but still pretty fucking high. No need to be a dick. You sound like one of the blue belts in BJJ who got #rekt by a bunch of wrestlers over the years on their first day in class.
Now for the arguement, 6 of the current champs right now have wrestling backgrounds, almost all of the top 3 in each division are former wrestlers, and historically most of the champs in UFC history have a wrestling base, and by that I mean the first marital art they learned was wrestling.
I'm not going to take the time to go and pull up some numbers for you, you can do that yourself, but if you just take the time and remember some of the best fighters in history they likely started out wrestling.
As far as dictating where the fight goes, you can cherry pick, but generally speaking wrestling helps you dictate the level of the fight, ie. Dillishaw vs Lineker, Cormier vs Hendo, Jones vs Bonnar, Couture vs Sylvia, Hughes vs Sherk, Stipe vs Ngannou.
The list goes on.
As far as wrestlers learning other martial arts at a faster rate, I have nothing quantifiable for you, however, you ask just about ANY BJJ school coaches and they will almost universally tell you that wrestlers are the most adaptable and kinesthetically aware.
That's why we have guys like Couture and DC getting into the sport super late into their lives and still being able to be highly competitive.
TLDR:
You are butthurt because you likely started out as a striker or as a BJJ guy, which is great, but don't like the fact that your sport isn't the best starting base for MMA. You are wrong, but that's cool. Use the salt on your fries.