Oh my sweet summer child, you have clearly not spent time mount farming in other MMOs.
The totems
are respectful of your time. I know people who are
still grinding out Invincible in WoW from an expansion that came out in 2008. 99 totems may feel excessive but it's bad luck protection. If the mount has a 1% drop rate, it's ensuring you do the exact amount of clears needed to ensure you're not going over that 1% worth of effort.
That way, you don't have to replicate the experience of someone like me, where a 1% drop took me 1262 kills to get:
I want the wings as much as anyone, but asking you to do 99 kills isn't terrible in terms of a grind, especially considering you can keep doing it and don't have to wait for next week's reset like you do in most other MMOs.