VGA is still the most common connector type I see on projectors and in conference rooms. It's being slowly replaced by HDMI, they might be about even now.

Ethernet is still the premier PHY layer for people who want their shit to work. Wifi is still flaky as crap these days in many places. Thus, there is no Ethernet replacement yet.

As chriswarbo says, the age of the tech is completely irrelevant. Instead, it's the utility / cost tradeoff that matters. A floppy drive would be expensive in terms of weight/size, and would be useful to approximately 100 people (10 if it's 5"). VGA and Ethernet adaptors would be useful to probably 1/2 to 1/4 of the users, and cost almost nothing to have.

Also, VGA specifically is one of those ports that's still really nice to have, just in case. Last thing you want is to show up at a conference room and not be able to plug in your laptop.