Blow three and draw two are the same note!
An important diatonic note is missing as a result, but you can bend the draw note on hole 3 to “fill in the blanks”.
Solo tuning (the tuning on the chromatic) manifests itself on holes 4-7, but 1-3 is tuned differently, omitting Fa and La. Fa is a bend on 2 and La is a bend on 3.
It will bug you (enough to want to play chrom!) not to have those notes, and that is where the difficulty of playing the diatonic comes in.
As others have shown, it IS possible to make good music on a diatonic, and mastering the draw bends on 2 and 3 take you a long way there.
I do notice, however, when the bent note on 3 is exposed—frankly it’s hard to achieve great tone with bent notes (and we haven’t even gotten to the extended notes you can squeak out--folks are calling these artificially created tones “overbends" but they can sound really lame).
But that is the goal—make it pretty.