I think is stress

Does "something that is stress" mean that this is something that cause one to feel pressure?

(At 3:45) but there are still some words out of reach, that you cannot grasp. And I did this to illustrate that it's an effect that you get in school, in university, in your job and daily life, that there is still too much information, that feeling that you've learned something and that it is simply not really accessible to you, that you would need it, but you can't access it. And that is something that I think is stress, the feeling that we have to learn more than we really can.