Interconnects are always about removing the bottleneck. If the NAND is capable of transferring let's say 1,5 Gbps, then you'd want the port on the device to be able to achieve this speed. It might not matter to most people, but it's still silly to be hamstrung by the port of the device when the storage itself is able to transfer at much greater speeds.
Personally, I don't care, at least not on my iPhone. I don't connect anything to my phone, or my phone to anything these days. Charging is being done via MagSafe/Qi Charging and I have not had any reason for connecting my phone to my Mac for several years for anything other than doing IPWS downgrade/upgrades/reinstalls and those would get faster with increased transfers speeds on the port, but I don't do it often so I don't really care that much about it. I will also do a full local backup whenever moving from one phone to the other just in case something happens, but the transfer itself is always being done by the direct transfer option that was added in iOS 12 and got improved upon in iOS 14 if I'm not mistaken.
I still find it odd for Apple to insist on keeping Lightning with USB2.0 considering how greatly the NAND speed has increase year over year. I still prefer Lightning as a port compared to USB-C as it feels far more solid. I've had so many USB-C ports starting to lose their grip resulting in cables losing with just slight movement. Never have I had any struggle with this using Lightning. But Lightning from a technological standpoint is starting to get really long in the tooth and the fact that everyone else is moving towards USB-C makes it really annoying to have accessories that still require me to drag along USB-C to Lightning cables wherever I go. MagSafe has started to remove the need for this, but I see no reason for Apple to not embrace USB-C, especially considering they've been pushing USB-C for so long on the Mac already.
We need USB-C rev.2 where they add some kind of locking mechanism to the cable, as we have on Displayport cables. Keep the same port so rev.1 and rev.2 is interchangeable, but please come up with a solution for cables barely staying in the port after a while. Makes USB-C so annoying.
And while you are at it EU, why not enforce accessory manufactures to at least offer USB-C options? Whenever I purchase a mouse, keyboard, webcam or microphone. They all tend to only offer USB-A. Some have moved to use USB-C on the device itself like my webcam has USB-C on the device itself, but the cable that came with it was still only USB-A to USB-C. We've been at this for so long, it's time to simply make USB-C mandatory on both sides of the cable.. This would obviously enforce all PC makers, makers of motherboards, notebooks and whatnot to follow suit and offer enough USB-C ports on the machines. Just make everything USB-C already, on both ends..
