I saw this pop up recently as well. It's interesting from a technical point of view, but also a bit worrying. On one hand, it shows how much demand there is for Silksong on mobile, especially Android. On the other hand, since it's unofficial, there are obvious concerns about legality, quality control, and potential security risks. Until Team Cherry makes an official announcement, I'd personally be very cautious about trying these ports. I'd rather wait for an official release (or at least confirmation) so the developers actually get the support they deserve and players know they're getting a safe, polished experience.