Most people who link to Wikipedia on Stack Exchange sites do so with the regular en.wikipedia.org
links, but occasionally you also find www.wikiwand.com/en
or en.m.wikipedia.org
versions – which have exactly the same content, but a different interface.
Whatever one's preference for an interface, presumably everybody values consistency. I personally prefer the standard Wikipedia interface (well, actually with a bit of my own CSS tweaking). Others evidently prefer the other interfaces, but in any case this should be the choice of the one clicking on the link, not the one who posted it – in particular, links posted by different people shouldn't lead to a mash of different styles.
So could we agree on one canonical way how Wikipedia links should be posted on the Stack Exchange network, and perhaps even something that automatically converts all posted links to that convention?