Thanks for posting this. Been using Linux exclusively for almost 10 years now but I still miss scrolling by clicking the MMB. I have some problems with my fingers so using the scroll wheel is rather unpleasant, yet necessarily, especially when scrolling down slowly and steadily for a long time (e g. while reading/scanning stuff)
A wise choice in this case. It’s 23 paragraphs that mostly describe standard Thunderbird features (as the author usually does not use email clients) and only one list with three (!) bullet points of new features in Betterbird.
Edit: to save you a click, here’s the list from the article (the actual feature list on the project page is longer):