Charging at 40 amps instead of 32 amps is 25% faster, which can be significant.
There are a few NEMA 14-50 outlets in my area that are free for public use including a couple at a local park and walking trail where I exercise after work.
My daily commute from home > work > trail > home is 37.2 miles which requires 11.4 kWh.
Charging at 32 amps with a Mobile Connector requires 1 hour and 29 minutes to recover this energy.
Charging at 40 amps with a Corded Mobile Connector would require 1 hour and 11 minutes.
My exercise takes about 45 minutes, so with a MC, I'm sitting around waiting
another 44 minutes.
A CMC would reduce this wait time to 26 minutes. I'd much rather be home 18 minutes sooner instead of sitting in a car waiting for it to finish charging.