"Negative People" isn't best term since most of them actually are bitcoin hater or altcoin users who wants to see bitcoin dead or useless. Just leave them alone.
I seriously can't believe there being any actual, I mean legit Bitcoin haters. In most cases people tend to blame Bitcoin because they fail to understand how it works, because they are always too late with buying, because they lose with gambling, etc. In other words, the temporary "hate", or better said, dislike, has always a reason behind it. In most cases these people complain about Bitcoin, and even threaten to move to altcoins because Bitcoin isn't doing this or that fast and cheap enough, are still using Bitcoin.
It's because they realize that altcoins don't offer any sort of solution to their 'problems'. Take Ethereum as example - it was supposed to offer people faster confirmations, and above of all, cheaper confirmations. At the end, Ethereum itself had to deal with the same issues Bitcoin has been dealing with for quite some time.