Overall, literally anything is better than Bitcoin's current ~7 TPS throughput. The ultimate goal is to have people leave their channels open and buy their coins through an exchange allowing them to withdraw through LN.
It's going to take a couple of years for sure, but it is likely going to happen.
Undoubtedly, The Lightning Network is a good solution for making millions of transactions, but it is an external technology designed for Bitcoin. Not many people use LN channels yet, but I see how its network is growing day by day.
The author of this article is trying to compare efficiencies of the top rated crypto currency and the traditional banking system. I think it is not correct to state such conclusions, because Visa, Mastercard and other payment systems make much more transactions that transfer fiat currency between customers. If so many people send their funds using the Bitcoin blockchain, transaction fees will soar up drastically.