There are discussions on:
1. Is a particular connector still used/useful on laptops - my statement is that RJ45 is absolutely still used on laptops, and went into some examples / use-cases.
2. Separate discussion, hopefully informed by the first, is how do we do that - built into laptop or via a bunch of dongles.
Apple in particular removing it from their laptops does not speak one way or another to corporate/professional environment requirements. Their approach is "use a dongle/dock" which in their view is compatible with whatever use case is needed (and some people disagree, which is fine - lots of vendors and in particular HP/Dell/Thinkpad all have robust professional/corporate/roadwarrior models with dock, port and even pointing stick capability).
They also removed scissor switches, sd card readers and hdmi. But they're bringing those back (or have already), so they don't seem like a good authority to appeal to here.
It's so clear that they removed it from their lineup? Clearly you're wrong. I have two Macbooks work/home, and a USB-C dock has been life changing in its awesomeness.
And yes my dock has RJ-45 ;)