I have a DSLR and I now don't bring it along anymore. I have three kids, so I already have to carry around a lot of stuff and children, so there is no more room or energy for my DSLR. My phone is always in my pocket though.
I recently invested in some phone lenses by Moment and I am very excited about them. They also fit in my pocket and I can pop one on my phone in about 10 seconds.
I also have kids, and no phone without seamless, automatic cloud backups and the ability to transparently take "Live Photos"[0] is at all interesting to me now. I don't care how good the stills are, if it doesn't have those two things.
[0] Live Photos are a feature of Apple phones where it captures a few seconds of video before and after you snapped a photo, including sound. Tap and hold on the photo to play the video. They're basically magic, especially if you have kids. Like the moving photos in Harry Potter. They also make photos with waterfalls in them really cool instead of reliably terrible.
this is the reason I loved the Ricoh GR series of cameras, an APS-C sensor that genuinely fits in almost any pocket is incredible, it's not for everyone but I wish there were more companies trying this, even the X100 cameras are too big for that
For the average consumer who doesn't know how to play music at all, maybe the ukulele would be a nice option. If you hand a professional guitarist a ukulele, and tell them it's a proper guitar, they will probably laugh at you.
That a ukulele is smaller is actually the opposite of what I'm looking for. I don't need a smaller guitar. I need a nice one, that plays and responds like I'd expect a guitar to.
I would never use a ukulele as a way to somehow replace a recording of a traditional guitar, even though it's more convenient.
There are thousands of photographers who feel this way about DSLR's.
If it doesn't fit your current/busy lifestyle, cool - the ukulele works for you. But don't pretend the ukulele is / can be a guitar. Popping lenses onto an iPhone camera is like putting an amplifier onto the ukulele. You're still trying to make something better that is, due to its size alone, never going to have the depth or quality a guitar or DSLR would have.
Also, I'm not dissing the ukulele, here. I'm trying to provide an example that just because a tool can work for a purpose, doesn't mean it's the right tool for the job.
From personal experience, if you hand a professional guitarist a ukulele, he will play the shit out of it and make it sound better than you've ever heard a ukulele sound.
OP, is making a weird comparison is all I'm sayin I guess.