I have an XPS13 with an Intel wifi card; still has the occasional issues (wifi not picking up networks after waking up from suspend). I'd say it happens to me on average once every one or two months, seemingly at random.
For as well-supported Intel wireless NIC's are, I've found they are utter garbage. The Intel 7260 in my work-issued W540 randomly flakes out on me and has giant latency spikes, I actually ended up saying to hell with the one in my personal XPS 13 and swapped it with a Broadcom card that's worked much better.
You're not wrong, which is why I said they are well-supported. But that doesn't mean anything when the hardware itself is awful, I have the same issues regardless of whether I'm using Linux or Windows.
I may need a proprietary kernel module for my Broadcom NIC, but the damned thing actually works consistently.
