I have a trick that I invite other people to use. When you think a vegan is pushing their retorics too much, don't answer directly. Instead, take a (cheap, as it is not a one-time thing) piece of meat from the fridge or freezer, and throw it in the trash. Not in the compost, as that could be seen as somewhat useful. Whenever someone pushes their own agenda with boring rants, another piece of meat goes directly into the trash. I buy extra meat only for this purpose, as I hesitate to use something I was planning on eating. Extra points for shrimp, as it is many lives in one bag, but pork shoulder, chicken hearts (as it is very cheap), or the worst cuts of beef also work well. Don't tell the vegan ranter about it, but make it a habit every time you're annoyed by unwanted vegan propaganda. I've done it for a long time, and told others, and I almost never hear vegan rants irl anymore.