But thats not the argument the article is making. And its still a non-sequiter. If your second point of 8 in an argument is a non-sequiter, it says something about the nature and structure of your argument, and it speaks poorly of your ability to reason and understand your own premise.
Honestly, I would take less issue if it wasn't their second point. If the article was titled "7 reasons regenerative grazing can’t make beef climate-friendly, and one bonus thing", it would be better, because at least the other 7 points (agree or disagree) support the premise.
Plant based diets "being good" remains a non-sequiter to their premise, and serves more as a value signal than it does to support their arguments. It would be a strong thing to land on, and the article could have been ended with something like "... and even if these 7 things aren't enough to convince you, (facts and data) plant based diets are demonstrated to be a (better for the planet) way of doing things", yada yada. The second point is a moral signpost that might work for you or me, but it doesn't support their argument.