Players like him are nothing but scum, having 2 or more teams in the same league to chuck matches in their favour so they could win the league, I don't think its wrong to have more than 1 account playing, just as long as the different accounts cannot affect each other directly.

I have more than 1 account, but the other accounts are much lower levels eg, Level 3 and 2x Level 1, but I mainly use those for experimental purposes more than anything else.