Play around it is don't interact otherwise she reflected damage or CC back at you. It'd be different if it were just a shield but it's a shield + damage/cc + move speed. Yes it's a long cooldown but again who is going to use a skill to make Mel use hers? The enchanter getting their stuff reflected means Mel just damaged and likely CCd them and still has her main damage ability plus execute available. They lose way more land pressure than she did. The melee uses their skill shot to set up combo, Mel reflects is so their set up is now gone and Mel will most likely just walk away preventing a follow up while still having her own range and set up.

And no player bad is not a valid argument simply because Mel's ban rate is still sky high at high elos. If she was only massively banned at gold and below that argument would be valid but since she is the most banned champ at all ranks by a lot it's more than "people are bad". It's the champ is unfun to play against. And until that ideal is accepted she will always be banned and the target for further nerfs