Someone who genuinely deserves the suspension (e.g. posts illegal content) will use the service. They'll get their suspension lifted because the company trusts the internal employee who filled out the form. Said person will continue to post illegal content and be suspended again. Enough true negatives like this and eventually the company will discover the employee is using their authority to let in randos. If the company is smart, they mark accounts that have been lifted by internal employees, so they will discover the first time it happens.
The best probable scenario for this is that said employee gets fired. Presumably, the company trusts said employee knows who they are vetting because they are risking their job; and I'm confident they would not be happy knowing they are using this service. But the worst is that the company stops allowing all internal employees from filling out forms for anyone.
At the very least, if this site is a joke, it should put up a disclaimer that indicates such. Not just a disclaimer to vet the rando, because I doubt an internal employee can do so any better than the customer support can. It should actively remove functionality like sending or publicing emails so that posters and developers can't actually use it to contact each other and exchange money.