OMEGALUL
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13-0-----------13-0-13-0------13-013-0------13-0-------------13-0
13-0-------------------13-0------13-013-0------13-0-------------13-0
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I agree with you - Just providing a possible reason. They may have studied what acend did to combat gambit strats on bind and used that as a justification to let bind slip through.
I also personally have no clue about Secret's map pool, it may be that they're simply more confident on bind than on the other maps they banned against gambit