there are 1185 coins listed on https://coinmarketcap.com/all/views/all/ there are at least 1000 more altcoins that are currently dead and got delisted because they no longer exist in reality. do you think all these thousands of altcoins did anything to anything?!
no they just came and went. no effect on bitcoin, nothing on altcoins, zilch!

these current new fork types are also the same. they are going to be around for a while and then go away and become a page in the history books. some of them won't even make the page.