I'm assuming he isn't absorbing people just to make himself look younger. And for that matter, wouldn't people notice when he's up giving his lectures?
That's easy to explain away. "Our lord has provided me with youth and joy for doing his bidding." Or something similar to that. And then most people will be like, "Well, plastic surgery isn't a sin, right?'
P.S. On an unrelated note. It was cool how Daisy's mother still watched professional wresting as a woman but for different reasons. Reminds me of a gag from Fairt Odd Parents.