You can believe in a kind of political "butterfly effect" where every little action you take has a meaningful effect on the world, but I don't think it's useful.
Downloading a browser may well put a thousandth of a smile on the face of someone you think is a bad dude, but if you give a shit about bad things happening in the world this is miles away from a good use of your time and energy.
I’ve heard enough from multiple sources about Ladybird’s creator to know that I don’t wish to support him and it’s not a recent view