You are absolutely wrong on both counts.
First, I am not on drugs, thanks. Absolutely you have to develop the ability to throw that hard. NO ONE has it in them with no training to throw a 90mph fastball. Take any powerlifter out there right now, give them a ball and see how hard they throw. None of them will hit 90 mph.
Yet.
A 150 lb scrawny kid named Lincecum through years of training his body, mechanics, timing, etc was able to train himself to do so.
Second, velocity is not everything, but it is the ticket in the door.
Wakefield is an anomoly. How many knuckleballers make it to the MLB? How many are there active now? I think he's the only 1. His unreal control of his knuckle and his years of experience is the only reason he is still playing. Take any other 40+ knuckleballer, no matter how good he is, no scout is ever going to look at him. Why? To old, too slow.
Jamie Moyer is 48 years old. The only reason he's still playing is that he has 20+ years of experience proving he can play. He used to have some gas, but not anymore. His sub par fast ball is not keeping them there. No one who is 40+ playing ball and throwing 80 mph is going to get a second look at by any pro baseball scout. None.
The bottom line is unless you are:
1) Young
2) Have the ability to throw 90+
3) Have command of that 90+ pitch
no scout is going to look at you in baseball. Trust me. I've done a ton of research on this.
What I did not mention in my post above is that when I pitched against the Na Koa Ikaika pros - I pitched 2 innings of hitless ball. It gave me a short lived time where I thought I had a shot at competing with these guys and trying out to make the team.
What did their scout tell me:
Over 30? Have you played AAA ball or better? Oh, you haven't then no thanks.
Can't hit 90? Why are we even talking to you?
So, think what you want, I've been there and seen what gets you in and what doesn't.
Edit: Check out this artcile on Wakefield and this quote:
http://bleacherreport.com/articles/23525-the-future-of-the-knuckleball
"While many teams continue to ignore younger pitchers who cant light up 90+ on a radar gun..."