I completely agree. I took Prism to PT LA and plenty of players were prepared for the deck. It’s been secret, but yeah the deck is real powerful. I went 6-2 in constructed and I would play the deck again. Although I think tbh I slightly prefer the winning Dromai list.
We've known about the ALS loop for months. People played it at LA and people played tech against it at LA. It's fine and if you didn't know about it or how to beat it that's on you for not prepping enough or paying attention. Just find room for AP gen in your deck.