Why Emraan Hashmi felt bad in Bard of Blood promo teaser?

At the premiere of the upcoming Netflix series Bard of Blood, the leading actor Emraan Hashmi shared that at a point he felt bad in the promo teaser as he is seen calling names to the superstar Shah Rukh Khan while interrogating him. He also hailed SRK for his self-deprecating humour calling him 'fantastic'.