Post Crisis Multiple Kryptonite?

[Timothy]

From Wikipedia

Also from Action Comics Annual #10, it is also a return of multiple versions of kryptonite. After Crisis on Infinite Earths, the decision was made to only have green. Now, more color variants has returned to the modern day mythos. They are now: Green (weakens and kills), Red (powers are uncontrollable), Gold (removes powers permanently), Black (splits into good and evil versions), and Blue (hurts Bizarro like Green for Superman). All five of them are now stored inside Metallo.

Why the Hell did "Crisis" occur at all if writers are just going to funk up the DCU like they did before?

[Papa Smurf]

at least they haven't made a gobstopper kryptonite.
but Lex forgot all the other forms when stuffing metallo:
Jewel Kryptonite
White Kryptonite
Anti-Kryptonite
X-Kryptonite
Slow Kryptonite
Magno-Kryptonite
Bizarro Red Kryptonite
Kryptonite-X
Silver Kryptonite
do you think he ran out of room?

[Timothy]

Or Metallo just said, "Look, this is getting old... I have a train to rob in... Great, now I've missed it thanks to 'Thanksgiving Lex' here..."