I don't own or want one. I shoot only revolvers now a days. But...
My dad got one. He's of course older. Has worked all of his life. Largely in tough and labor intensive jobs. He suffers nerve damage in his left hand, and arthritis in his dominant right hand.
He does have a 9mm M&P Compact I believe (3.5 or 4 inch barrel, can't remember as I don't know the models well) and while he does say he can shoot 9mm well enough, it would leave him sore later.
A couple months ago, I helped him source a 30 SC Shield. Its a lighter gun by default, has comparable amount of rounds, smaller, etc. Even with the lighter weight and size, he finds the 30 SC shoots easier for him.
He said he feels it's a small step down from a 9mm but better then 380.
I think it could theoretically catch on for older people who want semi autos but don't want 380, but 9mm may be a bit rough on aging hands, or the crowd who all support the current gun craze (younger and driven by YouTube people).
Seems to be well received based on what I've seen.