They've had a Virustotal report [0] for Cheat Engine pinned (Windows) without specifying that the reports seem related to the bundled installer adware — I'm not aware of any reputable malware reports, this is an open source project with bundled installer "offers".
From what I know their criteria for apps which are considered as an "alternative" to X isn't strict, more of a list of software with some shared functionality.
[0] https://alternativeto.net/software/cheat-engine/about/