Not really. There were some noticeable differences in 2017. Some storylines were adapted differently or left out altogether.
In 2017, the Blue Exorcist anime had its deviations from the manga. Some character developments and plot points were changed to fit the animation's pacing and style.
The Blue Exorcist anime in 2017 didn't strictly follow the manga. There were certain creative choices made that altered the narrative in some ways. However, both still have their own charm and appeal to different audiences.