People need to understand that FFXIV completely breaks the mold on the idea of Summons/Espers/Primals etc etc..

Primals are not a positive force. The very act of summoning them is an abomination that taints the very soul of the summoner AND the surrounding environment. On top of that they "temper" by their very nature as is confirmed by Ramuh, who finds the whole process distasteful.

People want Summoners to be like their XI counterparts, or Rydia/Yuna from previous titles, but it JUST. DOES. NOT. WORK inside the current lore.

Heck with the way the Echo works I find it highly improbable the Warrior of Light could even summon a Primal since it's fairly apparent we're anathema to them by our association with Hydaelyn.