There's no such thing as a 0 ping short of Sitting in front of and playing directly connected to the server itself (and even that still wouldnt really be no latency) With that said, the programs to reroute your hops are not harming SE's servers either. Worst case scenario in these cases is that they ban the IP's from being able to connect, this is usually only ever done with certain games in the cases of say tons of BR's connecting to an american server that would normally be blocked by BR IP's if they have a BR server

Being that FFXIV is an international game they likely don't care.