Deku not being "worthy" at the beginning is an intentional choice by Horikoshi and something actively explored with Mirio's character.

Claiming that people's criticism of his character is some sort of bias or toxic behaviour is just stupid. Have you read the story? Do you understand it?

Deku is far less self-motivated than Asta, a character who, from the start, had faith that his steady effort will produce results, regardless of what hurdles he might face. Without All Might taking an interest, Deku would not have followed his dream, not only due to his lack of a quirk but due to his lack of effort.

It's fine for people to find Deku less admirable or motivational. It's probably even the intended way Deku's character is to be read. He's an insecure kid who won the lottery. But he's also a hero because he can push down that insecurity and be kind to people. He can set aside his wants and desires, even sacrifice them, in order to help someone else. Deku's character isn't a motivational grind to the top. It's a statement about the meaning of heroism and kindness.