Strickland's whole thing is that he doesn't train, sparring only in a time when a lot of dudes are cutting out sparring almost completely. Strickland also was in a bad motorcycle wreck and clearly has mental issues and struggles to control his impulses.
Also, idk if anyone cares about boxing, but this was an odd fight. Respect to Wilder for making it as far as he did, starting boxing at 20 and pretty much relying on his right hand power.