I’m always amused by definitions of ‘efficiency’ that ignore price efficiency. One would expect people motivated for evil profit to make decisions governed by price. ;)
Likewise.
You have to look at life cycle cost then weigh in convenience & other personal factors. Leftists can’t balance their checkbook and ignore the cost part. To make it worse, they really don’t understand science, and if they do try to evaluate the cost, get it all messed up.