Completely off topic but I don't understand why wikipedia doesn't simply select the desktop/mobile version of the website based on the user agent (with maybe the possibility to override the behaviour via a cookie if you really want to use the desktop version on mobile or vice-versa).
The number of times I have to manually edit a wikipedia URL every day to remove the ".m" part is getting frustrating. I'm sure there's a browser extension for that but really, I blame wikipedia's poor ergonomics.
My guess is that this is similar to StackOverflow switching to HTTPS [1]. Once you get to a certain size, something seemingly simple like turning on HTTPS or detecting desktops and redirecting comes with non-trivial problems. I can only imagine all the nuances that have to be addressed when you're serving the fifth largest site in the world [2].
Personally, I love that Wikipedia doesn't coerce you into the desktop or mobile version based on user agent. Being able to switch to the (somewhat more complete) desktop version when browsing on a phone is invaluable.
Sure, I mentioned that they could put an override, but sane defaults would be good. I don't know how many people actually mean to visit the mobile version of WP on the desktop when they follow a ".m" link, but I'd wager that it's pretty damn low.
WW2 fighter jet