For me it doesn't matter where stored your altcoins whether its in a cold,hot or even hard storage the question is does the project or altcoins that you are holding is active or let say that the team are following their roadmap and really doing what the project should be.Because if not its useless.For me wallet is not important theimportant is you choose the right project that you can gain profit by shot or long term.Nowadays holding altcoins is not much advisable unlike before so much better if you gin profit from it sell it and try to look for the other one.
Yes, you said it absolutely right.
But i would like to add some more information as it completely depends upon a user. It's upto you(or the user) to whether hold what coins he like that can make him profitable.
But often many of the traders/investors make losses when they invest in volatile coins in the expectation of Good returns(profit).
And if the coins yield you profit then no question of cursing the holy coin.
So it's always depends upon ourselves whether we choose to invest in many altcoins