I personally don't eat meat, but I don't think it is a good-faith argument to say that rainforest deforestation in south america is a particularly good argument against cattle farming elsewhere. Those people are just unscrupulous in a different dimension.

It's not just South America. It's even in places like the UK

>Most of the UK and Ireland’s grass-fed cows and sheep are on land that might otherwise be temperate rainforest – arable crops tend to prefer drier conditions. However, even if there were no livestock grazing in the rainforest zone – and these areas were threatened by other crops instead – livestock would still pose an indirect threat due to their huge land footprint

(and those "grass-fed" cattle are also fed crops too)

>Furthermore, most British grass-fed cows are still fed crops on top of their staple grass

https://theconversation.com/livestock-grazing-is-preventing-...

Worldwide, perhaps. But TFA is about Texas and Kansas. West TX where some of the largest cattle herding occurs, is largely semi-arid grassland.