Anyone who doesn’t want to do it is the wrong person, and doesn’t sound like a good lead dev to me.
Agile doesn’t take much effort if you know what you’re doing. It’s just a card wall, standups and a planning meeting. This is not hard for a good lead dev. If you think it’s hard, you probably aren’t a good lead dev, or you don’t know how to do it right, which is the same thing.