This is absolutely true. Most of the ICO are very futuristic when it comes to their whitepaper. The reality always hits us when it comes to this, it always don't work as we expected. However, its been a great journey to each and everyone, being with them from the start until they reach the limit of cryptoverse is the important thing. They help us earn at the same time we help their company grow to extent that we can. So call it quits. There's a bright and dark side in everything.
ico whitepaper always discuss about technical of the project although most of those are just some ideas that need realization first before possibly finding the flaws. Id say it matters if we really want to get invested into the projet and see whether it could really solve problem they are proposing to find the solution for through their project but there's always something that could go wrong as you say.