Well, I don't know anyone, not even elderly people, who pronounce anything with a "voiceless velar plosive;" it's just replaced with an [h], so
Rogelio would be easy to pronounce. It would make sense that it's an easier-to-pronounce variant of
Rogelio if it had actually originated in Spain, as the listed pronunciation does include that sound; to my knowledge, [x] is a bit hard to pronounce, so thanks!