I've absolutely no idea why they do their very best to pass their stuff off as meat. I've seen things in the sandwich fridge in supermarkets with massive high-contrast letters saying CHICKEN and then in a tiny, barely legible yellow on light background "plant-based" above it. This kind of nonsense doesn't help vegetarians find the non-meat options available to them, and it just annoys people who want an actual chicken sandwich and they bite into it and find something else.
Some people love the idea of plant-based food, others don't. Let them make an informed decision, don't let companies rely on trickery to sell stuff.
Of course, there's the aspect to this that it's a lot cheaper to make something out of chickpeas than meat, so they're probably relying on people buying it in error and paying what they think is a fair price for a meat sandwich rather than realising it's an over-inflated price for what the food actually is.