Now, as I work most of my time as an AV-tech, I'd have to say that this is truth with modifications.
Projectors at conferences are usually vga only. I've never encountered a DVI cable in static systems at conferences. Sure, when we set it up ourselves and go for high quality HD projectors @ 10k ansilumens we will use our nice fiberoptic dvi cables or hd-sdi, but most of the time it is vga/rgb-hv.

That means one(1) adapter, if you bring your own laptop. Even peecees come with DVI these days.
For us techs, it means 3 adapters, one dvi-vga, one minidvi-vga and one DisplayPort-vga. This will not make much of a difference in our flight cases...

Apart from that, I agree. Apple pulled a bit of a stunt with the DisplayPort. While I like the new port, I think it's way too arrogant to assume that people will ditch a 6 months old machine just like that. :-)
H

Uhrrr... Nope.
The linux port was QT(i don't think I can quote the story about the reasons, but those who where there knows how hilarious the first stab at Opera for Linux was), but that has been mostly phased out, iirc.
The other platforms not QT. :-)
Best regards
Former Opera emplyee