You say he has so many commitments but you don’t mention any contact with his small kids, much less the older ones. It would have been easy to say “he’s frequently away for work or spending time with his kids” but there was zilch. Best-case scenario that that the “work” time also includes being-a-parent time, but there’s no indication you’re aware of that happening in the letter, other than an assumption that he does see his kids as commitments.

He seems to have a pattern of making 2-3 kids and then moving on, and we don’t know how much contact/parenting he provides after. If you’re fine with that for yourself and your hypothetical kids, sure, you do you. Just don’t trick yourself that you’re destined to be The One after he’s already semi-discarded or fully discarded at least two families. You may well not even be A One right now; it’s quite possible that all that travel for work is actually him spending time with another current family.