It technically is, but it doesn't harm your pc. You can install it without worry. antiviruses however block it, so disable antivirus before running the application.
No, youtubers say it is, but it doesn't hurt your computer. Because it is technically considered a virus, they call it a virus to get more views. There is no "malware" version, but the one in the itch.io page is legit. Antiviruses call it a virus, which is why youtubers use the word virus to get more views.