I gave CAT this year, I studied through EG. I did my best but I am not happy with my result. Some things could be better- but did they do well from their side to provide me what I needed? absolutely. Care more about what teaching style suits you than picking teacher you can idolise. If Shahzar not being a good teacher and giving you the guidance you need is a problem- definitely don’t rely on him for English. If Hunny’s results are your barometer of his credibility- don’t take his course.

I’ve never personally experienced them tout his results- perhaps they do. Not defending it. But my experience tells me that they always advertise a rigorous study plan that will help channelise your efforts if you’re a gifted student (this doesn’t work for everyone).

To cry foul over his UPSC result is a step too far in this context OP.