The whole jammers vs LEO stuff is pretty familiar for any security/crime discussion. For instance, the same scenario holds true in information security where "black hat" criminals may inadvertantly make their tools harder to use because information is shared with the good guys who design better protections/detections, etc.
Ultimately, LEOs could just become interested in the subject on their own and be a member of the forum/community without divulging their day job. If they want to learn and beat your tactics, they can. At least this way you know they have progressed.
Ultimately, you both will become better. At least until your countermeasures (on either side) become too costly.
IMO, the world becomes a bit safer and more advanced as things like that ratchet up.