https://www.cbsnews.com/news/100000-cattle-feared-dead-after...
Poultry, for example, is no better. Male chicks are dumped onto conveyor belts and ground alive as they provide no value to the farmers (for meat or eggs).
Dairy farms are also equal to or worse than the factory farms you mentioned.
My single biggest issue with these meat alternatives is I cannot understand why it's costing so much more than actual meat.
I'd imagine it's because of the economies of scale; once production ramps up to sufficiently-high volume, the prices should in theory go down. Availability in fast food should hopefully help with that.
Subsidies are another aspect to this, though I don't know offhand how heavily cattle ranching is subsidized v., say, corn or soy.