I have a couple of those, and they work fine. The only downside is you can't use wired charging and wired headphones at the same time unless you use a third-party splitter, none of which have great reviews.

The MagSafe charger kind of solves this, since it's at least easy to pick up with the charger attached, but MagSafe chargers are more expensive than Lightning cables, and the official one has a very short cord.

In my dream world, the iPhone would have two Lightning (or USB-C) ports, but I don't expect that to ever happen.

I think I'll keep using my phone where I don't need a dongle to listen to headphones.