I have no doubt they're still great games, but I just worded it poorly. They're not good pick up and play titles for a casual gamer that wants to enjoy a classic game, but not invest much effort into learning the mechanics or tracking down a buddy willing to do the same.
Most people that will spend time with these are going to be someone that played them back in the day and remember the qualities they have to offer, rather than a newcomer. Burgertime though is accessible and a good game, and also a good choice if you just want to sit down for 5 minutes and have fun. I can remember matches in some of the sports games going well past 10 minutes.