On my last phone, it's precisely the part that wore out first. A local guy replaced it for about $50 and I got another year of life out of the phone before I dropped it and broke the screen. (Note, this was an iPhone 6 that I replaced about a year ago)
Sure, and for some people the part that wears out first is the third SoC capacitor.
In agreggate though, the lightning port isn't the first thing that will break, and if it breaks you can use wireless charging. Whereas if you only use wireless charging there is less redundancy and the part that actually wears out the fastest, the battery, will degrade faster due to the heat.
