Bring up the rationalist community within academic philosophy circles and you'll get a lot of groans.
The fun part about rationalists is that they like to go back to first principles and rediscover basics. The less fun part is that they'll ignore all of the existing work and pretend they're going to figure it all out themselves, often with weird results.
This leaves philosophy people endlessly frustrated as the rationalists write long essays about really basic philosophy concepts as if they're breaking new ground, while ignoring a lot of very interesting work that could have made the topic much more interesting to discuss.