Raiders stun tap is far to easy to pull off.
Not only that, its fast, especially on console, give them high latency and you may as well put your controller down.
All I am saying is it would be better if it didn't stun you.
I think only the first hit should blind, it already gets drastic diminishing returns on the stamina damage last i checked. But the blind should only be on the first hit, then each subsequent hit should not blind until the first is 100% done.