These  bills are the product of the  banning of bikes on lands designated  by the Forest Service as "possible future wilderness areas" causing the loss of long time mountain biking trails.
I'm a hiker, biker and lifelong professional horseman.   Not once have I experienced  any type of  confrontation  among these groups on the trails.  Bike club volunteers are some of the best trail stewards found  and most bike riders travel at very sensible speed along the trails; not like the high speed video shredding.   Their numbers would strengthen the coalition of wilderness supporters.
  As  for the bears,  more have been euthanize following attacks on hikers than mountain bikers.