How do you square advocating for the "Open Source Resistance" which touts "stop asking for permission" to do software and then saying "we need everything on MacOS to be signed and will be dropping packages that don't get Apple's permission"?
I'd consider donating, but I find that behavior to be part of squeezing free computing and participating in and advocating for the corporate erosion of ownership of one's hardware environment.
OSS Resistance is about not asking for time to do something yourself while removal of unsigned casks is about what they host in the official Homebrew/cask repo. You're free to make & use your own tap to use with Homebrew without asking, so there's not really anything to square between the two stances - any conflict all comes purely from your 3rd stance about signing in general.
I just threw them a small donation for supporting this software for so long, even if it's only 98% how I'd want the project to be run all these years myself.