Poker 2's are one of the most beloved mech boards around right now. They have standardized keysizes, moddability, good layout, programmability, helped started the 60% revolution, created a PCB layout that became popular to follow, and it's cheap. (I'm paraphrasing others here) The point is, it's just a reliable and widely-supported board. Hell, just search "Poker" on here or the subreddit and you'll see how wild people get with them.