Personally, I do.
I can't speak for others, but I personally care that it's just like WoW's Warlock.
Not because I dislike WoW's Warlock, far from it, I've always been partial to Warlock. More DoTs = Best DoTs is my motto
However, from a design standpoint, it's lacking if it's just WoW's Warlock. Since Warlock has always had the majority focus on the Warlock themselves, with their minion being just there for buffs maybe a utility skill. They're literal fodder whom Warlocks contract to their will, completely disposable and not at all particularly powerful (Except for like, old Doomguard which required a live sacrifice to summon it and then needed to be actively Enslaved lest it go on a rampage and start killing, well, everyone). Even the Demonology Warlock specialization has a lot of the emphasis still on the Warlock themselves, sure they have more output from their Felguard (Or Wrathguard I believe it is these days?) but you still end up playing essentially Fire Mage but you spawn demons out the wazoo... (Which is actually the only issue I have with Warlock's design, is that after a certain point in the games life Demonology and Chaos specializations started to just feel like Fire Mage 2.0. Even more so when it was meta for Chaos to just use the Sacrifice skill to get rid of their minion altogether)
Compared to how Summoner has been presented in most games in the Final Fantasy series, where summons were always these big, impactful skills where an iconic character comes along and wrecks your opponent (Either by murdering their face, or by aiding your team). These weren't just fodder enemies that you didn't give a crap about and were just glorified DoT's that you got annoyed with when bosses killed with their AoEs. No, these were characters whom you knew and loved being summoned to do their iconic skills which were awesome and powerful.
Like, one of my favourite cutscenes in any Final Fantasy game is still the
Bahamut vs Alexander fight in IX
Comparing the scale and power of those 2 summons, to the crappy popotos that we get called an Egi and saying that the job is thematically consistent is farcical.