For many people a simple 120V plug is more than sufficient. I've got my 2018 Leaf charging off 120V and my Model 3 on the UMC and a 14-50.
The 14-50 is much more flexible than the HPWC. The 14-50 can support other EVs, welders, Camping Trailers and numerous other things.
I bought an extra UMC so that it stays plugged in, so like a HPWC, all I do is plug into the car each day. Plugging anything into the 14-50 daily, is a lot of wear.
I was also using another EVSE and the J-1772 adapter to begin with, but the UMC has the button to open the charge port, that just makes it simpler to use.