Completely agree that in general, methane/carbon emissions from ruminants cannot be much of a long-term problem since they’re part of a closed carbon cycle.
But, it is worth research IMO, simply because methane is so much more powerful as a greenhouse gas for the short time it remains methane. And it seems quite possible we could steer cow diets in a less methane-y direction without much cost if we had all the right information.
There are two things you do when voting in a two-party system:
I know it seems like a third party is the only solution to your current situation, but it’s not. The solution is to keep the idiots out by voting Democrat in general elections, and then to vote in primaries or with your campaign contribution dollars for Democrats who match your views on Israel/Palestine.
You might also support candidates who are in favor of voting reform, including things like ranked choice voting, which also happen to be people who currently run as Democrats.