I was looking at a BLTouch probe, and saw the recent question about one with intermittent failure. That was kind of scary, where I might spend a bunch of money for something that would make my printer harder to use, rather than easier.
But I was curious. I don't have any personal experience using these, but it seems like the probe would only be used during an initial level and when homing the Z axis. Thus, as long as the probe works most of the time, and failure to home properly doesn't damage your nozzle or print bed, maybe this kind of thing isn't too bad.
Is this assessment of how the probe functions (that it's not really used after the start of a print) accurate?
In the spirit of stack exchange, I'm not interested in the subjective issue of nozzle or print bed damage; I'm only asking about the objective assessment of how a probe is used by the printer.