There are known ways to deal with some of these issues:
Examples:
FLARM competition mode to reduce the tactical benefit of FLARM radar.
Delayed availability of tracking information.
Others
UH

Well UH, I and a lot of other racers have found that Flarm radar makes racing more fun. Most of us are in it for the fun of it. Let's not mess with that great feature please.

And messing with delayed tracking would reduce the fun and usefulness of crew following and race monitoring. So that's a bad idea also.