Interesting, but I am not impressed with the reviewers criticisms of Firefox and IE. Firefox solved its memory management issues in version 27.
https://areweslimyet.com/ IE doesn't have the plugin ecosystem that others do, but it has all the essentials unless you have specialized needs and built-in support for filters and block lists. It also has by far the best touchscreen interface of any desktop browser.
Bottom line: web browsers move fast, and complaining about problems with old versions is pointless.