For sure, I had that thought as well, that clothing is evolving alongside the things people are needing to carry.
But, for me, it does seem like we're going in a functionally poorer direction. Just a few years ago I could have a computer I could fit in my pocket. I can't buy that anymore. The fact that people are selling modifications to these devices (cross body slings, cases with those weird pop up things on the back so you can hold it one handed) to me means we've missed the mark on design. For more than a decade we had a great one handed computer that'd disappear into my pocket. No longer.