I think it is good for everyone to state what he like about the project, this way we can all read other peoples opinions and maybe improve ours as well.
I usually go with the flow with the ICOs. If I find enough evidence for me to prove that there is no scam, and that there are many people liking it, I usually buy into it. You see masses always prevail in these things.
You have a point, if many people follow an ICO it most probably is going to succeed in the fund raising, thus you always would have the option to dump the tokens.