Why does this fuck exist?

I just got into MHRise and beat this guy the other day, and all I have to say is holy fuck. Why? Who thought it would be a good idea to make a big, long ass monster with an even longer tail? Genuinely how do you even dodge half his attacks? This abomination had me taking health potions every minute. I hate this monstrosity with a burning passion and he belongs in the deepest depths of hell.