[WorldMaker]

A reasoning given for the change in tabs was a lot of user feedback that people didn't know you could drag and drop to rearrange tabs, but also kept requesting that ability (despite it already being supported). I can almost see the reasoning behind "the attached tab looks far too attached and 'fixed' to the rest of the window so floatable buttons would appear less so and 'easier' to move" and I don't entirely fault it for bad logic, though I also think they could have found a better alternative that didn't feel so drastic a departure from decades of tab UIs (in Firefox previously and elsewhere).

[drw85]

Says a lot about the users, when they request an existing feature without trying to do it. I mean it's a simple drag and drop. How do you not try that before? :D

[kyleee]

Partly because due to a decade (or maybe decades?) of constant UI/UX churn in software, operating systems, etc. people are scared to try things for fear of breakage and inability and/or ignorance of how to undo unwanted changes. Speaks to the overall terrible and continuously worsening state of software UI/UX