Blade Whirlwind bug

The kineticist’s blade whirlwind is bypassing burn costs in a pretty game breaking way. If you turn on metamagic feats that would affect kinetic blade, they effect blade whirlwind as well, but the costs do not. As long as the kinetic blade would be usable at 4+ burn cost or whatever your threshold allows, you’ll be able to autocast spam blade whirlwind for 0 cost with empower+maximize for 250+ aoe per round.