Irelia, blade-surge, and Tiamat

Honest question:

Irelia being able to proc multiple "Cleave" tiamat passives from spamming her dash That's just insane against clumped up opponents: in such a situation they will all be marked by her R, and allow her to simply tap the Q key a bunch of times for massive damage? Isn't that one of the reasons previous Fiora was changed?

/question