If you read the ingredients in Taco Bell’s taco meat, there’s cocoa powder (as here) and smoky flavorings (so the smoked paprika here). But there’s also an “oat isolate” which undoubtedly thickens the mixture to give it that characteristic, smooth consistency. We can match that with steel-cut oats, which absorb much of the excess liquid, especially during the natural release, to give the meat its much-beloved texture.
Many copycat recipes are also soupy and require thickening afterwards (or worse yet, draining, which removes much of the aromatic flavor you worked to get into the dish in the first place). We solve the soupiness with low pressure which requires much less liquid.