Some good igls have fraudulent teams so their good igling doesn't shine through
On the other hand, some good teams have fraudulent igls (ie. SEN) who r taking up the other igls' spots
it’s hard for IGLs to rise through tier 2 as your performance is obviously going to look worse when IGLing and only your 4 teammates know if you’re good or not. Pretty much either pick up the same igls who are already on tier 1 teams or go for a gamble