You're drawing what appear to be arbitrary distinctions between failure modes without making a good argument as to why one is a reliability issue and another is not.
My printer might jam if I feed paper crooked or poorly. My assemblers might jam if I feed incorrect components through misclicks, misplaced miners, or filled outputs.
My printer might fail from the entropy of wear and tear. My assemblers might fail from the entropy of biters attracted by generated pollution.
My printer might stall from running out of paper or a filled output tray. My assemblers might stall from running out of inputs or a filled output belt or chest.
Why is the printer arguably unreliable, but the assembler "100% reliable"?
Failures of my printer are not caused by magic faries sprinkling dice rolling pixie dust on my toner cartrige. Failures have physical causes. That factorio's assembler failures have modeled causes as well, instead of an arbitrary and magic dice roll, does not detract from those failure modes being reliability issues.
That my printer fails far less frequently than my Factorio assemblers points to my printer being more reliable than my Factorio assemblers. Your point that reliability could be even worse misses my point, which is merely that not only does Factorio already avoid the fiction of "100%" or "perfect reliability" - but that perhaps Factorio already models reliability worse than "real-life" in some aspects already.
My printer might jam if I feed paper crooked or poorly. My assemblers might jam if I feed incorrect components through misclicks, misplaced miners, or filled outputs.
My printer might fail from the entropy of wear and tear. My assemblers might fail from the entropy of biters attracted by generated pollution.
My printer might stall from running out of paper or a filled output tray. My assemblers might stall from running out of inputs or a filled output belt or chest.
Why is the printer arguably unreliable, but the assembler "100% reliable"?
Failures of my printer are not caused by magic faries sprinkling dice rolling pixie dust on my toner cartrige. Failures have physical causes. That factorio's assembler failures have modeled causes as well, instead of an arbitrary and magic dice roll, does not detract from those failure modes being reliability issues.
That my printer fails far less frequently than my Factorio assemblers points to my printer being more reliable than my Factorio assemblers. Your point that reliability could be even worse misses my point, which is merely that not only does Factorio already avoid the fiction of "100%" or "perfect reliability" - but that perhaps Factorio already models reliability worse than "real-life" in some aspects already.