It's one of a few reasons. Macs have worse thermal characteristics than they should; part of that is Apple's fault for making such thin computers with poor ventilation, but part of that is Intel's fault for making such shitty hot chips. Of course there are other matters that can't be laid on Intel, like the keyboard fiasco, but that's beyond the point I think.
The display cables fraying "Flexgate"[1], the numerous battery recalls[2][3], that the iPhone and the MBP, as shipped, could not be connected to each other (the MBP came with USB-C to USB-C; the iPhone with USB-A to Lightning; the magic trackpads also suffered this)[4], the kernel panics with USB-C until they finally got patched, that the flagship monitor (admittedly an LG device, but advertised on Apple's website at the time) had issues with … Wi-Fi (just being near it, from improper shielding), that same display also had huge issues with disconnecting peripherals (you would connect to the display and get picture/power, but no peripherals), the crappy noisey RSI-inducing redesign of the already poor keyboard (admittedly subjective except for the objective pain in my wrist, but, e.g., [5]¹), the poor design of the device s.t. any breakage in a component results in the complete waste of the remaining good hardware as nothing is independently replaceable/servicable, routinely receiving a score of 1 out of 10 by iFixit, Apple fighting right to repair[6], … oh, and the keyboards breaking the entire laptop from a single grain of sand, the terrible suspend/resume times, … and I haven't upgraded to Catalina yet. I hear that's gone so well for so many.
Yeah, Intel's chips are not the biggest fish in the Apple fish fry.
I'm not even an Apple customer, I'm just forced to use them by my employer. (And it feels like most employers nowadays.)