the old edge is still the most power efficient browser in recent memory, better than the new edge, and better than chrome (although the new edge is slightly better in terms of power usage) and Firefox (it's barely efficient, it's a power hog and it isn't even hardware accelerated on linux, even though it uses less ram, it uses a lot of power).
I will also go on the record and say that the new edge isn't just a rebrand of chromium, it does add a lot of microsoft-specific creature comforts, as well as some backend improvements and redesigns.
Some of the creature comforts are:
The full-page screenshot tool is super nice, much better than some that I've seen, and it doesn't bog down as much with massive websites.
The Read-aloud option lets you use Microsoft's built in TTS and even the "natural voices"
If you're on windows, you have the option to "Reload in Internet Explorer Mode" which allows you to view websites that only work with IE, in edge.
the "scrolling personality" is super nice, and feels responsive, less like the scrollbar is on rails and more like it's a sheet of paper bouncing around, works well with windows precision touchpads.
tabs have an option to be on the side instead of at the top, useful for tab-hoarders
Has one of the best PDF readers built in
The many Edge-specific flags, if you're a power user, you should def look into the flags, they're always adding new flags and options.
I just think that people are far more willing to label it as "yet another version of chromium" without looking into it much more, or giving it time to develop into something different.