Ever since he had unlocked his golden finger, a whole new set of possibilities had opened up for Gordon. One of which was changing his profession from folding laundry to something more in line with his goal of courting Jessica. And suddenly with this last skill that Portensa's Skill Tome symbiote had learned, he had a viable chance of leveling up his career.
This was a priceless opportunity, he knew he had to take it. There wouldn't be another opportunity like this for quite some time. Or at least he couldn't guarantee there would be any other chances.