I prefer to donate time. I'm now president of one local non-profit (in addition to my paying job), and a regular participant in another. Sometimes I'll donate supplies that we need, but never money.
If a time comes when I have little time and a lot of money, maybe I'll switch. Donors are necessary. But I know that we need hands more than dollars.
Why do you think BP produces emissions? They may be evil, but it's not out of malice, it's for profit. People, like the 26 million residents of Australia, pay BP to give them more fossil fuels.
A top-down response, where governments just outlaw all extraction and burning of fossil fuels, would be a lovely, quick solution to the climate crisis. By all means, try and make that happen, but I wouldn't hold my breath.
One thing you can do today to make an impact is to adjust your lifestyle to give less money to the fossil fuel industry. An individual carbon footprint is small compared with a company, just like the money they give to BP is relatively small, when compared with their total profits. But when you add up all the customers, their money adds up to the revenue of the industry, and their carbon footprints add up to the footprints of the relevant companies.
I had one interesting experience when it came to explicit consent. I walked to the date, she drove. No alcohol was consumed by any parties.
She offered to give me a ride home, which I politely declined, and then accepted when she pushed. I asked her if she wanted to come inside, and she said yes. I asked her if she wanted to come upstairs, and she said yes. We went up to my bedroom, did the deed, I asked her if she wanted to take a shower together and she said yes. I asked her if she wanted to go for round 2 and she said no. She left, shortly thereafter, and I was pretty confused when she told me she had felt pressured into sex and didn't want to see me again, when I thought I had intentionally given her lots of opportunities to say yes or no.
I still don't think I need to get a legally binding document agreeing to engagement in sexual intercourse, but that experience really demonstrated to me that an extra awkward question or two is better than the alternative.
I don't believe there are any explicit rules against redundancy in laws.
Uhaul and Home Depot (among others) rent trucks. When I moved, I had no furniture and no car. I biked past a yard sale with a bunch of things I wanted, told them what I wanted, rode to Uhaul, rented a truck, and brought a couch, a desk, a table, and 4 chairs home with me, for a rental fee of $30 as I recall, and not much more to buy all that furniture.
You're arguing that the actions of individuals have no impact on the collective actions of humanity, the sum of 8 billion individuals.
Similarly, you probably never had a conversation where someone said "Gee, I'll stop burning fossil fuels now!" But when you use public transportation, or patronize businesses on foot, policy makers are motivated to continue supporting such options. Not for you personally, but for you and others like you.