Because more money to spend by Mozilla means more and better products for its users. Minor inconvenience in UI will result in overall larger benefits for the userbase. It is obvious if you put aside the ads-hating generators.
>> did you ever expected THIS kind of DOGGY release from MOZILLA?
I have NOT expected that Mozilla will release their canines into the wild internetz. That definitely may contradict generally accepted paradigm that internet is feline-dominated.
why the hell didn't Mozilla say - "hey we need to diversify our source of Benjamin's, so we're putting ads"