Never and never ever.
If anyone had invested on Bitconnect, I guess you gotta take your money out now before the coin blows-up. Most likely it will disappear in an hour or a couple of hours or a day or a couple of days or if its strong enough maybe a week or so. I guess you can check it yourself and investigate what's going on especially when you invested a lot on Bitconnect. In my opinion, those coins/tokens with affiliate programs attached to them would most likely end up in struggle and in the long run will fade away slowly by slowly.

All the top 25 coins/tokens on Coinmarketcap.com I'd seen lately have no affiliate programs attached to those coins/tokens. The top 26 is Binance with affiliate program attached to it as we all know. If Binance won't stop its affiliate program, it will not survive in the long haul in my opinion. Why? Its because many affiliates would take advantage of this program especially those experts in affiliate marketing. They would advertise like crazy even to the point of creating some fancy ads (sometimes over descriptive even to the point of not related to the company they're promoting) of any sort to get huge signups. How much more if the affiliate program has also an MLM attached to it, it will be much worse.