I'm going to end a long-term friendship because my ex-best friend tried to enroll me in some multi-level marketing schemes.
A real person would give a great deal of attention to an ex-best friend, especially when they get involved in multi-level marketing schemes. What's your question here?
Do you have any good memories between your ex-best friend and you?
While you are right to not want to get involved in multi-level marketing, it isn't appropriate to drop a long-term friendship without first trying to help your friend to get out of the scheme they're involved in. MLM relies on a lot of social engineering and your friend has fallen under its influence. You should give your friend one last chance and offer him or her help and support to cease their involvement with MLM.
I'm going to do it anyway, before I have to pay a fine.
Does your friend really mean less to you than a fine?