@brandon Here's the thing though. I've had the same Thunderbird profile for 10 or 15 years. Literally copied my Thunderbird folder from one computer to the next and persistently used it.
I am not willing to redo all of my settings that I have spent over a decade tweaking to my liking, not when it has looked exactly how I wanted for the last 5 or so.
@brandon naw not even close to default settings, where permitted within the options anyway