For me it is when companies/services market themselves as donating to XYZ cause if I buy their product. If they want to donate, they should have already done that with the money they have. Asking me to give them profit so that they can donate is so obviously pretentious.
I’ve started signing them all up for each other’s mailing lists.
You sound like someone who would enjoy that adblocker that clicks on every ad in the background.
Edit: called adnauseam.io