The North Weezy rapper, who finished the competition in fifth place, appeared at Wembley Arena during the final on Saturday.
She sang a medley of songs, including her brand new single 'The Honey G Show' - before announcing that it will be released by Simon Cowell's label Syco on 23rd December, less than two weeks after the series ended.
The news left some fans furious, accusing Honey and Simon of stealing the limelight from this year's finalists.
But Matt, who was eventually crowned winner on Sunday, has wished Honey well - and said he doesn't blame her for making the most of the opportunities presented to her.
In an interview with The Sun, Matt said: "I feel like she has made a huge impact and I completely expected her to release a single. She has worked so hard and she definitely deserves it.
"For her to be able to release a single – that’s great for her. If I was in her position and I went out week eight or nine and someone offered me a single course I would, who wouldn’t?"
Honey is thought to be the first act in X Factor history that didn't win to release music immediately after their series ended.
She is up against Matt's winner's single, 'When Christmas Comes Around', which was written by superstar Ed Sheeran.
It has so far reached the number one spot on iTunes - but it remains to be seen how it will perform on the official charts.