Seems a simple enough explanation as to what is behind the hate part, anyway. Two big reasons that I can see:


1)
People who got into Bytecoin (and/or the Bytecoin creators themselves) will have a defensive emotional reaction to a derivative coin achieving more market success. They fail to admit the severity of the nastiness surrounding that coin.

2)
This is the alt-coin world. People here have far far less understanding of fundamental economics and market dynamics in general versus the bitcoin mainland. They give far less rational thought to why coins should attain and retain value, what "innovation" really means, and whether a specific technology solves a material need in the market vis-a-vis bitcoin. That's why so many in alt-space just jump from coin to coin, and think there's market-merit in nearly every tweak and "whitepaper".

So then when XMR comes along and gets strong support from people who who've done nothing but bash alts for years, they're left scratching their heads. That inevitably turns to anger, etc. They fail to see that privacy is the *one niche* that people who've thought long and hard about bitcoin/alts/crypto for years have identified as having potential merit. And that XMR is the first coin to implement technically sufficient privacy with a fair-enough launch. Without realizing any of that, I can see how Monero may look odd and lead some of the less diligent thinkers to unfortunate conclusions.