I've seen exactly one person in real life get gunk build-up in a USB-C port, making things feel loose, and just cleaning that out solved the problem. Considering the moving part is on the cable, the port itself should be fine.

I've never personally dealt with loose USB-C or lightning ports on any of my devices, which is why I pointed out that a technically inferior design just doesn't matter at all here, but you can find plenty examples online of people complaining about Lightning ports too if we just want to talk anecdata.

In practice, they're both fine for charging devices. Even if Lightning were technically superior at charging devices, which it doesn't seem to be, it still wouldn't matter. Lightning sucks for other reasons, like requiring me to bring an additional cable on trips, and not supporting USB 3 speeds on devices that have enormous storage and where Apple intentionally helps you generate enormous files that need to be transferred. That's why I placed so much emphasis on these points in my comment, and said none of the earlier stuff mattered.