I was in a safe Labour seat in London last election and voted Green. I was pleasantly surprised to see that tactical voting is catching on as Greens came second (it was always Tory second before).
Labour actually lost vote share, so if there are enough seats like this - I'm hopeful Labour -> Green can be a real swing.
The first paragraph is absolute nonsense, there's no need to make false statements to justify a position irrespective of whether you're vegan or vegetarian or anything else.
https://www.nature.com/articles/s43016-023-00795-w#%3A%7E%3Atext=In+the+sensitivity+analysis%2C+the,)%20of%20high%20meat%2Deaters.