Well, it's not entirely accurate:
"I honor the parts I feel that people want to hear and I amp up other things like slightly more 'metal' kick drum spurts and Bonham esc. swing to some grooves. Other than that, I will continue to lose my mind my way in fill sections like As I Am, but I won't change the main 'big' drum fill in Pull Me Under. I'll keep most main beats. The band guys need the music to sound a certain way, but prefer me to do my thing that got me the job in many places."
He has been changing things up since the second leg of the Along for the Ride tour and more noticeably in the 30th anniversary tour based on their Wacken show. That said, when they did The Astonishing shows with the encore, he immerdiately got this comment on FB:
"don't change the fills too much... not like I have any authority on this subject. lol but portnoys drum licks should be honored."