I like the idea (and even asked for something similar at some previous jobs), but it can be easily gamed. I could for instance just send the funds to myself or to a friend.

I am currently favoring the https://gitcoin.co model: individuals make donations to the projects they want to support, companies contribute to the fund only to match the individual donations, and quadratic voting rules determine how much each project ends up receiving in the end. Quadratic voting works to ensure that no single whales benefit from the matching funds and that the distribution is more even.

I've also have been contributing some of the BAT I receive from Brave to creators that are registered and I'd like to support (hi @geerlingguy!). It seems that if more people did that we could put some of the money from the ad industry into good use.