First of all, the game is free and open source. It was always meant to be a passion project and nothing more.
Second, everything I've used has been credited clearly in the main menu. I even specified on the repo that the "stolen" 3rd party assets are not my property.
If I was charging money or claiming that I've made everything myself, then yeah that'd be scummy. But I see no harm caused by releasing a *free* game for people to enjoy. Plain and simple.
This comment did trigger me a bit, considering I've put a lot of effort just for some rando to spit on it and call it "unoriginal and stollen"