Mc really is an idiot who would think a damn gargoyle that looks like something you would see in nightmare would be good thing to just force a "blind man" to touch especially a man of holiness a father of the church
To Lin, the statue is just a fucking statue. He studies ancient cultures in person, so no ooga-booga symbolism is going to set off any red flags. Plus, he's under the assumption that the priest is blind. What else is he going to do? "Hey blind man! Yeah, you, the one with the stupid eyes that don't work. Look at this statue and this flower! We're good now, right?"
The look of the statue, in Lin's perspective, is meaningless as he's seen it all in many cultural artifacts. And the fact that something spiritual could be conveyed by touch is lunacy for him. Thus, considering him blind, he's just letting him feel the various things he's been given by previous customers, since he doesn't have any other way to sense their existence, to point out that he's prominently displaying items he has received the items out of gratitude and good will. That being his proof that he's a good person and not an evil spirit.
However, the priest has been engulfed this singular aspect of spiritual teaching his entire life and has his own explanations for the practical existence of dream beasts and gods. So, he's touching ether originated by an item of power made by a black mage and some other monstrosity given to him as a seedling from the Iris elf sage, both intended to protect him from harm. So with his reality filter, and his recent run-in with that fat ass pig next door, he's going to freak out.
Lin, however, is still just trying to sell books and con... vince people that he's a good guy.