I find the juxtaposition of the innocuous lead in ("text from my mom") with the rather unhinged text funny. The comparison to poetry, which I personally associate with peacefulness, adds to the expectation that it's going to be a pleasant text, which gets subverted spectacularly. I can also imagine the mom's encounter with the steak, resulting in them drafting the text to their child, which makes me chuckle because it's such a silly thing to experience.

It's less explicitly funny than a lot of things, but the subtlety doesn't mean it isn't funny. Humor is subjective and all, but there's plenty of funny to be found here for most people.