For me, I never invest in any ICO project, even they are not a scam project or not, when the ICO is over, when the investors received their coin will dump it in the market, so I only invest the coin are listing in the exchange only.
That's a very natural thing I think because they (investors) who invest in ICO always get bonuses at very cheap prices, so even if they throw away tokens at the end of the ICO, they will still get profits, and this will also be almost the same as you if you buy tokens while the ICO is still running.