I've tried to push it a little and accelerated it with bitaccelerate.com and other services:
Is this a real accelerator or just sort of the same as confirmtx before? I doubt that this is an actual accelerator.
Same as confirmtx. It's not doing anything at all, which isn't too surprising but people keep spreading similar sites on social media pretending that they do work, while in reality they do not work. It's just a traffic guzzler.
There was a guy on here being a miner at one of Bitmain's pools accelerating transactions for people, but currently I don't know anyone who can provide a similar service. ViaBTC has always been the best low tier option for people.