Beetle
Seems to me that the questions are reasonable.
The guy has a job and is just looking into other possibilities. To do this he needs to find answers to questions he may have. He is being reaponsible as if the answers to his questions mean that APNG is not for him he has not wasted his and APNG's time applying for a job that he will not accept.
There may be other ways to have his questions answered but with all of the experienced PNG pilots here on PPrune this is also certainly a reasonable place to explore.