For some odd reason, when I use an adapter, the following happens:
1. The dongle (USB A to C or even a simple HDMI dongle) has some weird interference with my wireless connection. It happens everywhere I go as well (not limited to my wifi) So I always have to have 1 port connected to ethernet. Guess what? the MacBook "Pro" I have (with function keys) only has 2 ports! So it's either another dongle or a MacBook I can use with only 1 port.
2. Another really weird thing is after getting one of these apple dongles and plugging in ethernet and everything; then unplugging it from my macbook, my phone and any nearby devices lose internet connection. I can't explain it other than some literal sheild the dongle makes that prevents my phone from working.
In conclusion:
There are a lot of petty little flaws that make the $1k+ (or $2,3k+) MacBook Pro bad. I mean wireless interference is something I really shouldn't be worrying about.