Actually your reprinted letter from McCormick goes to the heart of your original question Dick: Is Mr Skidmore similar to Mr McCormick?
The wording of the replies you received are
almost identical so on first glance the answer would be yes. For those prepared to take a closer look Mr Skidmore then goes on to write that you should approach him directly if you have a complaint about his staff whereas McCormick replies (according to what you have posted)
I believe you owe Peter an apology, and I trust one will be forthcoming.
A significant difference in style and response. McCormick does not want to listen but Skidmore does. So the answer to your original question, which has been lost in the discussion about ADS-B, is no he is not similar to McCormick.
Can you keep us posted on how your discussions on ADS-B, face to face with Mr Skidmore, go please.