I think its much more mechanical. Its like a pitchers delivery and release. Except you need basically flawless mechanics every time.
Mental issues can ruin any player in any sport. And staying consistent through long droughts of not kicking, even with in a game is tough. But that is never an issue with QBs who come in off the bench or who go a long stretch with out a possession/many passes.
Ive played with kicking, but I wasnt a real kick at any level. Ive done muay thai and kicking arts extensively and I can tell you ive seen peoples kicking mechanics fall apart over minor tightness and all kinds of minor technique issues.
Watching soo many of Mourtadas clips, he practices trying to make field goals while kicking off. The tee, the holder, his approach, empty fields, and always from right down the middle. Its like a kick off. Which is why he excels at kicking off soo much. In a kick off you have no timer, you can take as comfortable a stride as you like. Kicking a field goal, you have to cover a very precise distance, with an exact number of steps, in a small time window. All of that is stuff he didnt seem to practice.
His approach looks uncomfortable to me. And he looks un sure of every kick he launches. But never surprised when he misses. I really dont think he knows mechanically how to reliably kick and adjust to different spots on the field. He only seems comfortable with the xpt, which is right down the middle.
It isnt really a surprise, he's only kicked a little bit in the IFL as a pro, didnt have a full college career, and what he had ended a very long time ago. He's old, lacks experience, and has tremendous leg strength. Weaker leg guys arent trying to hit 60 yard fgs every day, they are trying to figure out how to hit from every angle, and mastering their mechanics.