Kohei Horikoshi couldn't bring himself to let loose when he made Deku and All Might but Bakugo was a completely different matter.
Horikoshi's TWITTER Sketches Will Make You STOP Art
The uniqueness of the main character is always something that helps any project stand out, but even Kohei Horikoshi finds a My Hero Academia character to be a joy more than his own protagonist. The complexity of Deku's position as a protagonist has always been questioned by fans, especially compared to the treatment Bakugo receives.
In both the manga and anime, Bakugo is often seen taking the spotlight from Deku, so much so that fans wondered if he was the main character or not. Deku was often seen as a character that was almost pitiful at first glance and the epilogue made that more than clear. This very direction made the audience hate towards the end of the series, considering that the main character deserved better.
During an interview (via Tumblr), Kohei Horikoshi talked about how things can get complicated when navigating a manga of his scale with characters that can affect a huge amount of people. He addressed how the bias he had against All Might couldn't always be apparent in the manga and anime because at the end of the day he was a character that needed to be treated fairly.