That's an old world, for me. It's how the Windows software ecosystem worked and works to this day.
My goal is to try to do something practical just on data compression. I have neither knowledge nor experience about malicious software mentioned. You may be comfortable about this.
https://www.linkedin.com/in/hakan-abbas-178b5852/
I was referring to the practice of downloading executables from such forums in general, not to your post specifically. I have no reason to suspect that this particular post contains any malware. But in most parts of the software world, Open Source has been the standard for experimental publications for a long, long time, and seeing a forum depart so strongly from that standard is certainly surprising, and does of course have security implications when this practice is used at scale.
You can always use a sandbox if that's the most concern. A bigger issue is that, as like other established forums, enough many people don't know much about data compression and contribute to the noise.
There are open source developers out there who literally write installation instructions like these in their READMEs: