I suppose if those plant-based diets were based on peer-reviewed scientific studies and shown to cause no nutritional, physical, or mental harm to the animals then it wouldn’t be animal abuse. But I haven’t seen the threads so I’m assuming that wasn’t the case.
For Christmas I bought a box of Ferrero Rocher chocolates, carefully unwrapped each one, replaced them with brussel sprouts, and wrapped them back up. My wife’s reaction was priceless as she went from pure joy at the gift to absolute horror. Of course after we had a laugh I got out the container of chocolates and gave them to her (they’re her favourite).
I detest dress codes, just let people wear what they want. You wanna wear jeans? Go ahead. Shorts? Fine. A nice suit? Go for it.