Its sole purpose is to be a global currency you can send from A to B effortlessly and without relying on trusted intermediaries. It has done that for 15 years, every day, every hour, without a single hour of downtime or hack.
Even if these statistics are perfect, it's nonsense framing to not put them in context. How does that electrical compare to the electrical burden caused by SWIFT? Western Union? etc. https://endthefud.org has a number of great sources for that