My idea is to use "the browser that works", particularly for important tasks. For example, I find that Edge (or Chrome) sometimes works better than Safari for sites that require a secure login. Just my experience.
I also found that opening another browser for a particular purpose is not a "new browser every time", but is only new the first time. After that, it is part of my purposeful plan for browser use. My Mac browser use often does revolve around Safari, but I occasionally make "side-trips" with other browsers, because I know when those are necessary, at least in my own experience.