What is with the hate on captaincy and now guilds?

I am really excited (as is most of our discord server) for guilds. But recently I have been running into players during diving or reading comments on youtube about how captaincy is lame and how adding guilds is not adding anything new to the game. I thought more people would be happy about it (because everyone games like me of course!), but am genuinely floored at some of the hate it is getting.

So yeah, why the hate on captaincy and now guilds fellow pirates?