Do you really think he should keep practicing serves with an upright body at contact and falling to the left?
Do we still need more sideshots to see if he's raising his toss shoulder and lowering his hitting hand?
Doesn't more practice just makes his style more grooved, when he should maybe make some changes to correct the flaws?
I don't know.
I'm an old fart who is not getting any better, so I'll allow my technique to go to pot...... low toss hand, great archer's bow, but straight toss arm at contact.