I didn't like Summoner before the Endwalker changes, now I love it, so, while you may have a point about some players no longer liking it, that doesn't mean EVERYONE dislikes it. Furthermore, the identity of Summoner remains even if it's manifested in a different form than the one you were used to. Also both current and previous implementations of the Job in FFXI have failed to live up to the ideal of having a Summon that is a Controllable Pet Of Significant Power, and that's been true ever since they made pets untargetable, if not going all the way back to the job's introduction in 2.0

I'd like to see an implementation more like FFXI Online's Summoner, but that wouldn't be a good fit with how FFXIV works. But if you want to really have control over an extended-duration summon of signifcant power, FFXI is right there, letting you summon, say, Alexander. Or Odin. Or Fenrir (but the cool Fenrir.)