Illaoi CAN support

I was in champ select and the person that was gonna be bot wanted to pick Kat. I nicely asked the said person to pick an adc because we had no range. The group started to be toxic telling me Illaoi isnt a support and blah blah blah. Yes Illaoi isnt a traditional support, however there are people like me that can make tank Illaoi work. So there is no reason to be toxic.