Not only the Isekai genre but I'm seeing that the anime also pokes fun of the typical RPG tropes 😏. I think the coffin is a nod to an old JRPG trope where a certain party member is defeated but there's no revive that can be used. The anime also made a punchline of the bard job being useless in a battle. This episode has been a chaotic and yet fun to watch with all the references and twists on the story.