Hi Almot
A lot of what folks do is simply because we CAN and or want to for me it's not much more complex than that
I understand the MPPT 60 has an Ethernet interface and the PWM does not offer such a direct interface. If the OP desires to have a wireless router interface it's a VERY simple thing to interface to the RS232 serial data connection with a Serial to Wifi adapter
I will stick with the term "used"
As said earlier everyone has different wants desires and needs. I try to respect everyone's opinions and hope others try to respect mine
