The other flaw with crowd sourced data is data reliability.
Like, I say this as a completely theoretical, I wouldn't do this and I'm not aware of anyone doing this, but imagine setting up 10 or so different alts. And all of them being here for a lengthy period of time and occasionally contributing in the last 497 pages, enough to look legit. Then lying and claiming suddenly they'd all ordered in June and got a VIN last night.
Would completely throw off the data. And spread a lot of discord and frustration with people who ordered older than that.