He is NOT a forward, he is a winger,
Wingers are forwards.
and especially an isolation winger that hugs the touchline
He's not special. Salah, Son, Neymar at Barca were constantly found hugging the touchline dribbling and creating chances. They accomplished this alongside scoring goals. It's not like Dembele stays at the touchline 24/7. He finds himself in the final 3rd quite often, in perfectly good scoring positions, it's just that his finishing isn't good enough to finish the job.
Once again, I can't imagine pulling the mental gymnastics for such an average player. Are you really his cousin?