There is no solid evidence of this person being that of the "free switch day" messiah, Mr. Gazza.
Despite that fact, you cannot call him a troll as he has done nothing in troll behaviour.
Also, I do not believe has been affecting SX Pro/OS sales, as it was a matter of time before Nintendo was to step in and hinder the sale of this product. Paypal most likely knows the true function of the SX OS/Pro and most likely wouldn't look good lm them to facilitate the sales of the product. But whoever he is, he most likely speaks the truth, and those who beg to ban him also understands who he is and is afraid.
In addition, he has done nothing which could be ban worthy, so the mods' hands are tied.