Just because it is in your contract doesn’t make it legal!

Realistically it could be worth checking your local laws regarding it and potentially speaking to a lawyer as some will do a free consult to see if you have a case

Yes, the brand Tupperware is an mlm and sold directly by sales people. Back in the 50s and 60s Tupperware parties were a thing.

The confusion is likely the whole q-tip/Kleenex thing. We call it all Tupperware but really it is not Tupperware brand most of the time