"low seven figures" might not quite be "fuck off money", but it's without doubt "life changing money" for almost everyone.

No matter _how_ emotionally attached I was to a side project, if you offered me a few million for it I would sign in an instant.

The creator probably didn't break his back making it, already has a job, and probably has reddit equity that will make him money when they IPO.

I would've for sure taken the first good offer for my project in that case.