Its not about that. Blockadz blocking fake publishers who create a faucets and make that blockadz ads refreshing non stop and generating non stop impressions.
This is why CPC advertising is key instead of CPM
It would be easy to detect them by paying users small bounty for reporting auto refresh sites.
They are very easy to notice when you see them but right now faucet users don't want to report them because they get absolutely nothing for that but instead they lose money because claim amounts would go down or even whole faucet would have to quit.