No, Shamal is just the father Goku-papa should have been. When a drunk pervert assassin is the best role model you can get, you need to learn how to be a better parent.
Though Shamal isn’t exactly the best father figure either.
BABY!GOKUDERA: Hey, Shamal, guess what, I fought those bullies again and I beat them all with my dynamite this time just like you showed me!
SHAMAL: *SIGH* I’M NO LONGER GOING TO TEACH YOU, YOU JUST DON’T SEE IT.
GOKUDERA: Huh? *SAD AND CONFUSED SEVEN-YEAR-OLD CHILD* :(
[ROUGHLY SEVEN YEARS LATER, GOKUDERA IRONICALLY HAS LIFE SAVED BY IEMITSU, KHR’S OTHER TERRIBLE FATHER FIGURE]
GOKUDERA: :O WHAT I COULDN’T SEE BEFORE WAS MY OWN LIFE omg wow that all makes so much sense now.
SHAMAL: FINALLY, GOD HAYATO YOU’RE SO FUCKING SLOW.
The sad thing is, even with all of this Shamal absolutely is the best and pretty much only real father figure Gokudera’s had in his life. So what I’m basically saying here is that I am constantly amazed Gokudera did not grow up to be a complete psychopath.