But why did they have to break the lore

Is that Blaze & the moster machines?

Yes

I used to watch that show very long ago.. Wait there is something different but i can't spot it

It's about the lore.

In "Blaze of Glory", Blaze meets his friends for the first time. However, that was debunked in "Blaze's First Race", as Blaze already knew his friends when he's small. So yeah, the whole lore was destroyed just from that 1 episode...

oh i understand now