It's unanswerable -- what were the bluetooth headset sellers selling before the iPhone ditched the headphone jack? Maybe they were selling higher margin (but lower cost) wired headphones that had a lot fewer support headaches. Few people call support to ask how to pair their 3.5mm jack with the phone.

The Airbud designers could have designed the same product even if the iPhone still had a headphone jack, so it's hard to say definitively that their life is measurably better now.

As I said above: I would not have purchased AirPods if it weren’t for Apple removing the 1/8” jack and my life is better for having them. You only need one example to counter an absolute statement.