Some alts are very useless and getting shitcoins, for sure. There are coming more shitcoins every day, so I think it's a good idea of sorting them out if you have some. In the end there will be only a few coins/tokens existing with a bigger value and some shitcoins getting useless.
In total I think 90% to 95% of all alts will be shitcoins in the end.
Almost all the coins that you see on coinmarketcap will vanish. Bitcoin will eventually be worth nothing as well, you have to make the most of it.