There is definitely a huge difference between the bitcoin and other(alternative) cryptocurrencies,the bitcoin may happen to be king, and the very first one in the market, but there shouldnt be any problem differentiating it from other shitcoins, as its value is far higher than any other cryptocurrency, I doubt if anyone can actually be confused about all this
And yeah I may not really fancy the proliferation of more and more coins daily,but it really does show how popular and wide spread this network is and is becoming,if you wanna be on the safer side though, stick to investing on the bitcoin.
Moreover, this fuels to bitcoin negative propaganda as any sort of scam carried out by them leads to bashing of bitcoin.
People have always been indifferent right from day1 of the inception of this currency and that's not changing anytime soon,no great/good system abounds without negativity..
You have enemies?, good, that means you've stood up for something,something in your life---Winston Churchill.