[jesselt]

I'm highly skeptical about the claim that someone could know 2000 Kanji after two years of study. Unless this person is a hermit, people probably don't have enough time to learn 10 new Kanji per week while also reviewing all the old ones they've learned.

Maybe our definitions of "know" are just different. I don't know a Kanji unless I can write it from memory and read it in any (or at least most) compounds.