Wikimedia seems to make a habit out of "considering" things for a long time before actually enabling them. Enabling forward secrecy is relatively straightforward.
Yes. However, if you do that, perhaps you're less motivated to find solutions to other, equally important problems with HTTPS.
Enabling perfect forward secrecy is only useful if we also
eliminate the threat of traffic analysis of HTTPS, which
can be used to detect a user’s browsing activity, even
when using HTTPS.
