the only thing that is hurting the market is the altcoin market itself. more precisely, it is about the fact that 99% of the altcoins are completely useless. which is why they don't have any future and that is exactly why the only hope for them is to be pumped and dumped and nothing more.
so the result that you see in the market is a constant decline of the values of all these coins with some temporary uprise (aka pump) and eventually death and replacement by new shitcoins.
whether there are 50 altcoins or 2500 altcoins doesn't make a difference as long as they are useless. but if they begin creating valuable coins then even if there were 10000 of them, they will all be valuable and keep rising.