I don't get it either. I ran my car at 3500 lbs with me in it with manual brakes on the street and track (1500 total miles) for almost 2 years and loved it. Never will go back to power brakes.
I just hated the "mush" of the boosted brake cars I did drive.
Diff'rent strokes diff'rent folks I guess.
And yeah that Weld dude is POWERFUL.