Should I disable uPnp?

This applies to many routers, altho I am using 1900ac.

Is UPnp needed for common Windows and iOS apps?

In particular, is it needed for Apple's Airplay feature (used by AppleTV and many receivers) and by DLNA to function?

Thanks.

Aloke

PS: This seems to be a big no-no based on these news items from last year:

http://www.forbes.com/sites/andygreenberg/2013/01/29/disable-a-protocol-called-upnp-on-your-router-now-to-avoid-a-serious-set-of-security-bugs/

http://www.kb.cert.org/vuls/id/922681

Has Linksys fixed the bugs in its implementation of UPnP?