Forget all the nonsense about the right to read what you want, whether dirty mags are on sale at airports, whether the crew reacted correctly or not. To my mind, this all comes down to one simple thing.
Respect.
Respect for your fellow passenger and respect for the airline that is carrying you, and its employees.
This guy clearly has no respect for anyone other than himself.
I daresay his mates consider him to be a real "oke", but I think "oaf" is more accurate.
No doubt he reads this magazine at home in front of his wife and daughters, and they don't (dare) complain.
What a man!