Within the first hour of reaching Draenor you were forced into a Garrison quest line which drove the core story, not to mention the benefits you'd miss out on from gold, professions, and the legendary ring, mandatory for raiders, being tied to the Shityard, which by all accounts = garrison.
I haven't played arena since prideful season yet managed over 20k HKs in that time. Remind me again how it's forced in any capacity to do alternative PvP content?
When was the last time you had to participate in an arena match to advance a story arch?
You're literally retarded if you actually believe what you're saying here.
And to return to your initial point - yes, WoD was completely ruined by Garrisons.