I think her reasoning was fine, as advertising is needed not just for consumers but also to get vendors. Anu and Anuj were targetting to get housewives for cooking and such right?
For example, many people who shop at Ikea in India are well used to smartphones and online advertising. But Ikea still advertises on billboards, TV, newspaper.
First, when I read the written update I thought they rejected her idea, but still thought her bitching about boss on the first day to colleagues was stupid. After watching episode I was completely shocked. No one can be this dumb, especially one who has corporate experience. I feel like CVs botched this track. They could have shown kavya working there for a few days and then for some reason getting fired if that is what they wanted to show.
Also CVs are very inconsistent about Kavya's job, first, she just got suspended for some time, then when Kinjal's track happened her ex-boss called her back. Even though HR was taking action Dholakia, they won't fire Kavya that was very unrealistic.