I think that whoever made such a statement (not simply playing devil's advocate) would be, to a degree, sensitive. Video games do not cater to everyone's taste, even one like Pokemon. If you really wanted to debate, pick your fights wisely. Some people may think or feel a certain way such that you cannot overcome their sensitivity to whatever offends them. Let's take the "fighting" example.
"Because Pokemon involves fighting, it is bad."
Pokemon was made for kids, and (most of the time) most trainers aren't out to kill or harm others. The "fighting" is actually more of a friendly duel. The anime capitalizes heavily on this friendly atmosphere, but even in the games people aren't out to harm one another. Therefore, unless you consider even friendly duels/spars evil, then i just refuted that point.