* Pog: An exclamation of excitement, surprise, or approval, often used in gaming. It originated from the Twitch streamer "Gootecks" who accidentally typed "poggers" instead of "poggers" in chat.
* Poetry: The art of composing poems.
Therefore, "pogtry" is a humorous term used to describe poetry that is particularly exciting, surprising, or impressive. It's often used to express admiration for a poem that is particularly well-written or thought-provoking, or one that is particularly relevant to a specific community or subculture.
It's a relatively new term, so you might not see it used very often outside of online communities, particularly those related to gaming and streaming.