Not necessarily. You can just increase the pet's contributions to overall DPS without making them the main source of DPS for the SMN. The only cost the SMN would pay on that end is not get more skills ripped off from Bahamut.
I've said this before, but pet focus doesn't mean that you turn SMN into the Lineage II Arcana Lord (a mage that summoned cats that auto attacked and used skills on the mob, with the AL's main abilities being heals meant for their pet along with buffs that increased the pet's speed, attack and defense). You can be obvious about it by giving the job abilities that enhance/buff the pet. You can be subtle about it by making the pet deal more damage to targets under the effect of your DoTs. You can also be somewhere in between, where your pet benefits from actions taken by you (example being that using Energy Drain or Fester enhances your pet somehow). There's a good number of possibilities when it comes to master-pet interactions, and I can understand why some are frustrated to see those seemingly ignored for yet another expansion.
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Speaking for myself, at this point what I want to see is the job stick to one design and go with it. Either develop egi, or make SMN an entirely trance-based job from the ground up. The design right now leans one way then goes the other way after you hit lv52.