Strongly agree with the point about being more convincing while being flexible. Of the friends whose minds I’ve changed, every single one was won over while I was being flexible and expressing that it didn’t need to be all or nothing.
Another point about cows is that their meat is the most wasteful of land and water, and the most polluting. These are “side” arguments but the collapse of ecosystems across the globe is also an important issue to me and I’m not sure why it wouldn’t be to others who care about things like suffering reduction. It surely is inducing a lot of suffering now, human and otherwise, besides my personal belief that “a diverse and robust biosphere is intrinsically good.”
I’ve been tackling many “wobbly chair” problems in my life in the last few years due in large part to adopting just such a mindset: by removing annoyances/distractions, removing friction, and developing new abilities via these types of efforts, I’m able to take on bigger problems and goals. It has been very good for me, in that the scope of my hobbies has grown… but it’s also surprisingly easy to feel like I’ve made no progress against the big issues on days where I’m unwell and struggle to concentrate. These “wobbly chair” type problems, once fixed, become invisible achievements, and I still often get trapped thinking I’m helpless against the big problems.