well, I think the gate swings both ways
I agree with what Old Fuff said, and with what mmitch said
Me, I do clean my guns after every range session, and inspect 'em for at least the obvious easy stuff. Carry screwdrivers, loctite, etc, etc in my range kit, just a matter of habit.
Just got a little careless about checking that old T-66, after so many rounds "fired". Snap caps don't leave much powder residue, no CLP required; no cleaning required, got lazy about inspecting.
But if 'manufacturer X' earns themselves a reputation the old fashioned way, for routinely putting out too many NIB pieces with obvious flaws and/or need for warranty work before the 'new car smell' has even faded, then I think they deserve the sting of a little public ridicule. At the least.
faulting buyer should be no excuse whatever for forgiving factory
two mistakes do not make the first mistake irrelevant
As trivial as a loose screw is, these objects are required to reliably go bang with deadly seriousness. One screw loose is just one screw loose, but the real impact of that is wondering just what else did factory not do right. Finding out after 50 rounds, 500 rounds or "500 miles at highway speed" is disconcerting. A close inspection on the glass countertop or test drive around the block is simply not enough. Confidence in integrity of maker also matters, and it is up to them to earn that confidence. Warranty work required, buyer fixing it themselves DYI , that does not build confidence. Steering wheel comes off my new Chevy truck after 500 miles, rolling down the highway at 60 mph, color me unhappy, whether or not I hit the wall.
a NIB firearm is not supposed to be a "kit" for you to take home yourself, to finish building yourself, or fixing yourself.
Not unless advertised as such. (some ARs just might qualify, but not NIB revolvers)
Everybody screws up every once in a while.
Making a habit of it is not something to be praised.