Premature optimization is the root of all evil. There are lower hanging fruits. Avoiding animal products in your diet is your best bet as individual to fight climate change: https://www.theguardian.com/environment/2018/may/31/avoiding...
For a start, you could stop subsidizing them. For the long term you could fund a massive meat replacement research project.
(Though I disagree with the OP that this is the biggest issue, it is a large enough issue that it's worth tackling it, and certainly larger than streaming video.)
OTOH social distancing and wearing masks has shown recently that (most) people are fine with changing their behavior, if necessary.
If people could get infected with climate-change disease and x% of them die, there would be a lot more action to prevent it.
Reducing meat consumption doesn't increase emissions because animals already have to eat plants and they already fart on our behalf. If you cut out the middleman (the animal) you need less plants and also fart less. It's a major inconvenience with a major gain.