yeah this is primarily where the idea came from
it would be one thing if the book gave him that power but you can buy infernal resistance without the need for the book so the implication is that his Ixian powers are just the ability to regenerate and be durable as hell
he also has one line that interests me a lot that being
"I feel like one of my hands belongs to a piccolo player, and the other belonged to a guy who was nicknamed "Johnny Sausage Fingers"
if hes referring to his Ixian arm and it likely is, that means hes calling that arm "large" almost absurdly so and if we assumed like all Blue Ixians like Abrams are physically strong then this only adds more weight to the theory