I think it's clever, Summoner DPS Certainly needs to be a concern on the radar. I'm all for different styles of play, but throwing dots, and a pet, and essentially safe from 80%+ of all fight mechanics due to the ability of sitting back 40+ yards away from the boss (NOT REAL NUMBERS) Makes stacking them far too common and defeats the point of having other DPS as far as elitists are concerned. They need to be limited before they get out of control even further.
If this turns out to be true, then that's a clever way of ensuring that summoners are still a vital part of groups, but blacklisting other jobs because they can't ignore 80% of mechanics, or suffer real penalties for actually doing their jobs.

Time will tell!