Yes sacrifice your livelihood so that someone else can implement the feature anyway.

Yes, that’s called having a backbone, aligning your actions with your own moral code.

This is the same logic as ‘well if I had quit my executioner job, someone else would have done it, therefore I am a morally blameless and non hypocritical executioner who is against the death penalty.’

Just use an ad blocker.

Obviously this is the easy solution for yourself personally. Costs you nothing, benefits yourself, allows the systemic bad practice to continue.

The actually accurate analogue would be to contribute toward actually creating or maintaining a free and widely usable adblocker, an alternate platform, to do something that helps other people overcome the problem.