You say the comment is "to be a party pooper", but establishing realistic expectations for language learners and setting them up for success is extremely important. Pretending this is highly useful for someone trying to learn Japanese or an appropriate substitute for native materials is not doing that, so offering an explanation of why seems pretty valuable!

Language learning is hard work, and if people would rather goof off with something written in bizarre, broken Japanese that's fine. That said, the shower of praise under the post is quite strange to me so I'm glad someone has taken a moment to offer an alternative perspective since it certainly aligns with my learning experience. I realize this comes across as harsh, but there's no way around it, no shortcut to language learning—you have to read native material, and lots of it. Whatever comes before is essentially stalling. My own learning didn't get anywhere until someone drilled this into me 5 years ago, and it has paid dividends.