I think that highlights the problems with giving away domains below 1$. It's like doing a deal with the devil. Your registration count will increase faster than any other TLD but your brand and reputation might take a hit that will be difficult to recover from even when you are #1. .xyz have the same problems.
Once you are perceived as a spam extension and get blocked the game is over. Hope they manage to avoid this.
I think that highlights the problems with giving away domains below 1$.
PS: I'm sure that many webforms still do not recognize new extensions. Most rely on regex validation routines that are broken. For instance IDNs are not usually handled well.