In what manner are you finding them uncomfortable? Do you sit in a relatively upright position or are you positioned in a more reclined posture as I am?
I, personally, have no issue with the TLX seating comfort. The headrests on our 2011 Pilot are tilted forward rather pronouncedly. I find it annoying primarily because I sit in that vehicle in a chair-like position, though I have become used to them. I believe that the headrest re-positioning was mandated by the NHTSA to reduce the severity of whiplash injuries. I don't know when this change was instituted...
My wife constantly complained about my 2008 Honda Accord having uncomfortable headrests, so I was curious to get her opinion on this subject. She said they are much better and she has no complaints. I find them very comfortable as well.
When we test drove the TLX the head rests seemed somewhat uncomfortable and were told it was a safety thing and couldn't be adjusted. While we couldn't adjust it we could and did get use to it. I am actually more comfortable in this car after a longer drive than any other I have owned.
I feel them comfortable, but it can be annoying for somebody with some decorations in the hairs as it is made to lower injuries when rear-ended. Same as a lot of vehicles today. Safety first... But Acura headrest are soft and comfortable. Infinity ones for example were too hard.
No headrests are ever comfortable when you have a ponytail. For anyone who like to put their hair up, tie it really high up on your head instead of right at the back of it and the ponytail should clear the top of the TLX headrest without any problems.