You still can't replicate the finger picking patterns(plectrum or soft pick is easier, of course) exactly as the ukelele has only four strings. So, it makes sense to try some alternative approaches to make things sound interesting.

Also, when you do move to a six string instrument, you still have to think of what to do with the other two strings although I have seen some people only play very simple chords using the top four strings.... I actually saw this method taught in a very early guitar tutor.

A baritone ukelele isn't much smaller than a small guitar, of course.