First I do not think he is a good singer though he can sing . That is why he is jealous of the name sake.
He may be unaware that no one can have exclusive name in sri lanka any person may get any name at any time without any relationship or otherwise .
A truly talented person will not be scared of others having his name or style. This indicate that he is not great musician . I never thought that he was a great singer though I also like certain songs sung by him.