This is just a blatantly bad…
This is just a blatantly bad article. Just come out and say you prefer gas vehicles, and want to bash Tesla. Gas prices fluctuate all the time, and it depends on when/where you took the average cost from. It should be in some fine print somewhere. If not, that's on them.
Plenty of areas have time-of-use plans. Just because your area sucks, and has high electric costs, doesn't mean it's true for everyone. I pay 11¢/kWh, and could potentially be cheaper if I had one of those plans for charging. So for me and many others, charging is WAY cheaper than gas.