Just some engineering comments.....
Temperature can be an accelerator for valve seat recession (loss of clearance). The head temperatures really go up when 1) the ambient is high, 2) sustained high speed travel (80-90 mph on interstate), 3) sustained low speed travel (1st, 2nd gear stuff), 4) mixture ratio
The machining on the valve seats and valves are not perfect when new and are expected to "wear in" a bit for good seal.
Finally, there seems to be a tendency for people who check their own to say "I need adjustment" while when dealers do the checking "they don't need adjustment". I see this comment on so many various websites that it makes me wonder.
I won't be skipping my first adjustment and there is a logic when others say you can possibly skip your 2nd adjustment. I will do my own the first time but only if I still like the bike by then.