Actually what you're saying here doesn't hold much merit. First, you can exchange your old crypti coins for new Lisk. If it was a scam you'd be SOL on that. If you sold them all, well that's not Lisk's problem.
I personally invest in companies. I see this all the time where executives wrap up an old biz to restart a new one. Current investors who are still invested are carried over. They aren't cutting them loose. It's a bit different in the world of companies, as investors tend to be controlling much of the say, but if you own a stock in a company, you typically don't have a say as to how things are restructured. You do have a say in whether you want to sell your stock based on the news, hold, or buy more. It's really the same idea.
Take the information. If you think moving to a new project and transferring old coin holders to the new is not "fair" then you should probably not invest in the project. If you see innovation, a better future based on restructuring efforts, and think there is value in the project then you should invest. It's your call. But to keep going around and calling it a scam is a bit silly.