If Apple gets rid of lightning they lose their durability advantage vs competitors by using a poorly designed connector.
Especially when currently Apple uses USB-C for their entire lineup with exception of iPhones and iPad 9th gen.
https://www.appledystopia.com/reviews/usb-c-vs-lightning-pag...
"With Lightning, the connecting tabs are on the cable itself. USB-C has connecting tabs on the port."
This reddit comment thread describes a flaw where the USB-C device-end becomes clogged with dust, sometimes possible to clean out with a toothpick:
https://www.reddit.com/r/GooglePixel/comments/9wdylm/usb_c_p...
This is a reddit post where people are complaining about lightning cables failing:
https://www.reddit.com/r/iphone/comments/5cjvlf/durability_o...
If you were buying a device, would you rather the port on your device wear out, or the cable that connects to it?
This is a Hackernews meme until some solid real-world evidence is provided. Not edge cases.
https://www.youtube.com/watch?v=OqtNleXhTRE
This isn't the first time I've heard someone suggest Lightning is more durable than USB-C, but I've not seen evidence of it.
My device have a pretty hard life. I carry them around a lot, do a fair amount of travel, and am fairly clumsy, so pretty much everything ends up falling once in a while. Sometimes considerably more than that.
I'm typing this on a laptop I bought 3 years ago. The bottom cover is bent, the fans are making a grinding noise, and both upper corners of the screen have been dented to the point of damaging the LCD on both corners. It's just had a few too many awkard falls and is about at the point where I think fixing it isn't going to be worthwhile.
All USB C ports are still in perfect working order, though, despite a few falls from a desk with cables plugged in.
I've not had issues with any other USB C devices either. Yeah, I'm sure it can be broken if you try really hard, but it does seem to take a far amount of effort. The port seems very solidly built and I think damaging the cable is more likely.
In contrast, I've got years-old Lightning devices and the cables still hold strongly in the connector.