A process is comprissed of inputs->performing activities->output, in this context it is a process.
I understand your point, you try to be sure you are doing things well by using kpis.
But If you start trying these events as processes, you will end up full of hundred of processes and kpis, as a result you will overburden your system, in practice such events are not treated as such.
Try to identify your main processes, once identified, assign them KPIs and goals.
What the standard requires, it is to assign KPI but not in everything, only where applies.
and in this case, is sufficient kpis on main processes.
A lot of work you will have focusing only in processes that really are important.
Try to spend time on things that really "Add value".
Finally if some processes dont comply, and you do a cause and effect analysis, for sure, will indicate that 4.1 and 4.2 where not analyzed very well.
I hope this helps