On the contrary, it all matters. Try like hell, go down kicking and screaming, vote for Biden if only to prevent more holes from being drilled, push for class consciousness and solidarity, get organized, get involved, and bail water like crazy.
Just don't mistake where you are in this image, and don't mistake the Dems for allies, they are at best a useful tool.
I spend my available volunteer time assisting a local homeless shelter, and I donate roughly 3% of my income on supporting groups that I believe do good. Much less than I'd like, but I believe every bit helps.
Your not wrong (well I kinda hope my donations help on those fronts or I'm throwing away money¯\_(ツ)_/¯ ), and focusing on the big political goals is extremely important. But I've got my own battles to face and I do what I can with the time I've got.
But I fully appreciate folks like you who are at the front lines of these issues! I checked out the mobilize.us site you recommend, and it seems like a good way for folks to get involved if they don't know where to start. If you don't mind, I'd like to add it as a recommendation to the text of the meme.