No - of course I don't want major damage to the engine, and I'm not trying the tempt fate, either. It's just a repair that I've been putting off for two years (or more now) mostly because the chirping doesn't happen for LONG peroids of time and I forget about it. I live in a warm weather climate and the noise only occurs during the short winter months, only during engine start-up, and only here and there, so it's not at the top of my list of things to do.The chirping is the bearing running dry. It will likely become eccentric from wear and at some point the rotation of the shaft out of tolerance within the body of the synchronizer will cause a problem with the helical gear meshing of the camshaft and the synchro which incidentally also drives the oil pump.
Do you really want to risk catastrophic failure at highway speed and lose oil pressure to the engine which will likely cause major damage?