Perhaps you misunderstood what I was trying to say - I really do like playing pet classes! I just don't like XIV's SMN, and don't play it, because the pet I summon is basically a DoT that I can summon and ignore. Spamming DoTs and direct nukes is fine, and I have no problem with classes that use these mechanics, but I certainly don't expect them to be advertised to me as a summoner. A pet-focused job is different to a job that has a "fire and forget" pet that essentially doesn't do anything.
I don't want to be blunt here, but I've been playing XI's SMN since the times when it was undeniably broken, as people (including myself) have been describing, and I'm still playing pretty much daily. I would say based on my direct experiences that I am qualified to make a decent statement regarding how SMN has changed, and I did my best to describe this in my previous post. If my words aren't convincing you then I am afraid there's not much more I can say!
Suddenly and mysteriously? Certainly not. I tried to illustrate how these changes have come about. SE actually recognises that we need class-specific gear now, because in XI (unlike XIV), pet stats are unique and not connected to the player's MND, INT and so on. They didn't bother with that for a long time. They've lowered our recast times, increased the potency of most of our abilities, increased our ability to synergise with other players using other jobs. This isn't some baffling metamorphosis with no explanation - it's been a progression as the game has developed.
The challenge level of XI is certainly different, but to say it is lower is completely incorrect in my opinion. Lots of things have been made much more convenient, and a lot of the really awful things like multi hour long pop windows have been abolished, but those things were never hard, just deeply boring and unpleasant. The real challenges we face in XI vary from patch to patch, as do those in any game, but there is still content that is very difficult to complete with any consistency, just as there always has been.