Your mk 1 eyeball will often "see" what you expect to see. How many times have you experienced an in-line stovepipe or failure-to-feed? Chances are very few, if any, therefore your eyes aren't accustomed to seeing these kinds of stoppages and you have no training/experience to quickly discern the differences.
Actually I've practiced them for literally hours over a series of courses and at home. You have more than eyes as well. A click and no bang could mean a badly seated mag and then a tap, rack, bang. A squishy trigger and you may be in a failure to extract situation, failure to eject, or empty mag. The weight of the pistol can also be an indicator but I have to be honest and say that if it was say on the last or next to last round I wouldn't be able to tell the difference compared to empty.
When your pistol doesn't fire and you're in a fight for your life pausing to look at your pistol to figure out "what's wrong" can cause you to become preoccupied with trying to fix the problem. Your attention gets sucked into the dealing with the gun instead of reacting to the danger.
And performing a technique that won't actually fix the problem could easily cost you more time than the split second it takes to diagnose the problem and start implementing the correct solution.
You RACK the slide to load, unload and clear stoppages. It's a common movement used to perform multiple tasks. I operate the slide lock only when I want to lock the slide open for unloading or clearing a stoppage. I don't release the slide lock to put to put the slide into battery after I seat a magazine because because "seat/rack" is virtually identical to "tap/rack". Using a different technique to release the slide increases decision-making, which can lead to making the wrong decision or indecision during a fight - which increases your downtime and vulnerability.
Now you're back to the issue of which technique you prefer more than the idea of defaulting to a tap, rack, and bang.
If you want your default action to be tap, rack, bang no matter what your senses tell you, rock on. It's not something I've seen advocated before.
Let's do a quick scenario. Late at night (can't see the brass), gun stops shooting. If it's a failure to feed when you go to pull out that mag it won't go. Now you're in a double feed situation and you clear it without the need for the tap, rack, bang you mentioned. It it's a failure to eject situation and you drop that mag and rack the slide the spent casing will fall out in the process. In both those cases you're back in the fight. In the first case faster than defaulting to tap, rack, bang, and the second case a bit slower.
You'd be right to point out you're out that magazine though, so maybe not tossing that mag and feeling the top of it for a cartridge would be a good idea if you have the cover. Also a good reason to carry a backup and multiple backups if at home (at home the spill from my weapon mounted light would let me see if there was or wasn't brass in that ejection port when the firearm stopped). So it would seem the failure to eject situation is the big loser for the different order of operations and I have to say again that even in low light the slide will be locked to a noticeably different location. If it's pitch black then I am not sure what I am doing shooting without being able to identify a threat. Again my default action isn't to automatically do anything, it's to take a split second and assess.
I guess my point is each order of operations has its advantages and disadvantages. What you said though about low light makes me think that defaulting to tap, rack, and bang in low light might well be a good point. You might counter with the thought that I should use the same order of operations no matter the time of day and I might even agree there, however when we drive cars we typically leave more distance between them when driving in bad weather as opposed to good. We're creatures of habit but we can adapt too. You've given me something to think about though.