I was assigned to MLM project in work, have some questions

I work as a web dev, FE/BE, and company I currently work in took a project that is basically some kind of MLM structured business. It’s a challenge to do such project, not only from dev perspective, but also morally I’m not sure if I’m okay with it.

My question is - what do you think about MLM structures in companies ? Is it scam based business or is there something that I’m missing ?

It’s not decided yet if it will be binary or turnover based, but what is your experience with those two types of management system ?- from a technical perspective or product seller perspective. Thank you.

Have you ever worked for MLM company before? What was you experience ?