Do you believe the person posting is guilty of "creating accounts routinely"? Or just one for this app and one 'main' account?
I don't see an issue with creating multiple accounts as long as they're not used for abuse, e.g. spam or trolling, or cause technical issues, e.g. creating millions of accounts. I mean if done right you'd never know or care.
I'm usually pretty critical of self-promotion, but in this case they gave a real world example of how they did something related to the article's contents. They didn't even provide a link or an app name, just said that you could find it in their history if you were curious.
I think that's about the best you can do not to promote your product while trying to give real-world examples of things that are being discussed.
Listen friend, I'm using it as a concrete example of a technology in every case.
Today I'm using it as a concrete example of H.265 (BPG) as an astonishingly good alternative to JPEG in applications where you control the encoder and decoder.
I don't see an issue with creating multiple accounts as long as they're not used for abuse, e.g. spam or trolling, or cause technical issues, e.g. creating millions of accounts. I mean if done right you'd never know or care.