I heard others argue it the exact other way and say that now that we have T5 buffs and burn to death damage is a significantly larger part of your total damage output it got more important buffing your magic damage. What makes you feel butcher is the clear winner now?
It doesn't really happen often that you end up in a group with zerker barb/guard/bs/demo/conq as a hox when you can also put a sin there in my experience. Neither do I ever get blessing from a pom on my hox because they usually use it on a class that benefits fully from the weapon damage buff like barb for example or on a soldier to give them extra survivability/aggro.
In a time trial where you want to optimize every source of dps I would say poms, zerker barbs and sins are in much higher danger of pulling aggro then hoxes.
All things being equal (gear/experience/skill level) I don't feel hoxes are in more danger of pulling aggro then any other dps class. If you are better geared, more experienced or simply better at your hox then others you are supposed to hold back in order to not get aggro. If you didn't ever have to think about your limitations it would make a lot of things very boring.