That may have been disappointing for Jackson, but the 22-year-old would rather focus on what he gained during the title-winning campaign rather than what he missed out on.
"It was nice for him to say that (paying tribute to his performance against Scarlets)," said Jackson, who now has nine Ireland caps - four starts - to his name.
"Being a coach there are no easy decisions and it was definitely not an easy decision for him (to make regarding the replacement out-half).
"It is his first Six Nations and he has won the Championship. It is an unbelievable achievement for him and for the squad. He had to make some tough calls but you have got to respect the fact that he has done brilliantly."
Schmidt wanted Jackson, Ulster's man-of-the-match against the Scarlets, to be present in Paris after his involvement in the previous rounds of the Six Nations - including his first Test try against Wales.
"It was good just to be there (in Paris) and to have been involved in the other games. It was a brilliant experience," admitted the former Ireland Under-20 captain.
"I have come a long way since the Six Nations last year and it is obviously great to be involved in that bit of Irish rugby history.
I have learned so much over the past two months and Joe has been a massive part of that. He really focuses on the little things and for someone like me, trying to fine-tune my game and trying to get better all the time, he has been brilliant."
Jackson added: "Likewise Neil Doak here (at Ravenhill). I don't take it for granted that I have had two guys who have really good knowledge and who have helped me a lot.
"I am keen to keep learning. I am enjoying my rugby. When you look at how things haven't gone well in the past you definitely learn from them and I am sure there are going to be brilliant times in the future and some bad moments too, but you just have to keep learning.
"We are trying to make our own piece of history (at Ulster) and it's great to be back and having the build-up to the Heineken Cup quarter-final and also chasing that play-off spot in the RaboDirect PRO12. It's just a very exciting time at the moment."