Are you saying the power required for wifi transmission is lower than the power required for usb?

Also, what's a BA?

I am guessing a business analyst (https://en.wikipedia.org/wiki/Business_analyst). Basically, someone who facilitates creating and communicating stakeholder analysis across a business. The idea is that a BA would have a thorough understanding of everything across a business. Think of them as a product owner in scrum, except there is a bit more overlap working with different parties both internal and external to the business.

You will likely find a BA (or someone with a similar role under a different name) in most large organisations (and likely in quite a lot of medium ones, too).

As per tim (thank you tim), yes, Business Analyst. I ask annoying questions to make sure everyone understands what the actual problem is rather than everyone making their own assumptions where there's ambiguity.

An additional device just to facilitate wired network usage over wifi usage felt like unnecessary additional complextiy and probably higher power usage. The blog author replied, however, saying that wifi was a bit flaky, explaining the design choice.