I'm sorry, but merging with a company doesn't make you a cofounder of that company. You were not there when it was founded, thus it's not an applicable label.
I'm just asking for a title correction, not trying to slander the guy.
Elon Musk and Peter Thiel (and a bunch of other people from each of X.com and Confinity) are considered members of the set of PayPal founders, for instance.
Do quit it with the high and mighty attitude. I've made it very clear I'm not attempting to slander anybody, just clearing up a misconception. When you allow misinformation it will spread, and that shouldn't be acceptable.