I don't agree, I think you're being too sensitive. I don't see anyone being disrespected or slandered. People are relating their experiences and stories about such businesses, and the OP is relating one that happens to be negative.
I don't know if there is anything more dismissive than telling someone they are being "too sensitive". I'm not a member of an mlm, nevertheless I stand by my comments. This is not a place to relay bad business experiences, generalizations, and hearsay:
"That's the way these MLMs work, people give a little to make them go away but it has the opposite affect!"
"Just the realization of MLM combined with the nieces, made me want to stick my hand in the blender."
"Having seen personally how an MLM can wreck someone's life" (I've seen the same of churches, marriage, starting any business, etc.)
"realize it's a crock."
"It breaks my heart to see that people still fall for these MLM schemes."
"so it must have gone the way of all stupid, greedy decisions."