The ontology of BM is that particles exist no matter what. I can spot a few problems with this approach but it seems that theorists are plugging the holes in this theory with success.

1. If electrons are "real" particles then how come they don't lose energy in orbitals? Does it imply that electrons simply hover in orbitals without motion?

2. How is jump trajectories any more intuitive than pair production out of a field? Same goes for quantum tunneling. Both these phenomenon require "real" particles to jump vast distances between spaces. Micro-wormholes?

3. How was the detection of Higgs boson possible? Does the theory imply that somewhere in the Universe the Higgs particle already existed and when energies reached that high amount in the LHC, the higgs spontaneously jumped into our detectors?

4. What is the proper time in Bohmian mechanics ? It seems it requires that the quantum potential have a singular absolute reference frame. Is this not in violation of the principle of simultaneity?

5. Is contextuality really a problem? Should spin/polarization be considered as fundamental as position/momentum?

btw: this is an interesting documentary introducing D. Bohm and his ideas: https://www.youtube.com/watch?v=XDpurdHKpb8