Aikido takes many years even decades to START understanding. With a 4th kyu which typically takes 1.5 to 3 years at most, with this amount of time I can say they would have learned NOTHING of aikido but the forms.
This is something of a hobbyhorse with me lately, but I think we do ourselves a disservice when we make our art more difficult and esoteric than it is. Yes, we also do a disservice when we promise easy answers, but I see a lot of people overcorrecting in the other direction.
Within 6 months to a year--let's be generous--on the mat, I expect to see a new aikidoka start to move in a completely different way. I expect them to drop the (first level of) stick-man rigidity or limp-noodle nebulosity, depending on where they started from. I expect that to reveal itself, incidentally, in decent roll and back falls, but more importantly in connected attacks and reasonably connected movement as nage.
That's not nothing.