The only training a/c that doesn't land itself....
Um, there are a few tail wheel trainers that fit that descriptio a bit more accurately than the PA38.
....so the stude learns the most difficult bit in learning to fly-the landing- at a very early stage.
Only a tail dragger
demands correct landing technique - it won't let you get away with sloppyness. Correct technique can of course be taught in a trike, but the aeroplane won't insist on it being applied. As the countless 3-pointed 172s and even wheelbarrowed ones you see every day, and the monotonous monthly reporting by AAIB of nose leg collapses gives testament to.