Generally people of Indian origin do not need to go through the standard visa process, but it’s possible they still make up the majority of these cases.

Right, and most likely they are punjabis whom the modi gvt want to punish them for their support to indian farmer agitation where gvt had to apologize publicly.

They are probably investigating every single visa application .

Visa backlog due to manpower shartage in a pure BS in 1.4 cr population country.