Tire makers want you to run the air that will give the best tire life...
Car makers want your luxury car to feel smooth,.. or your economy car to get their estimated mpg's...
Whatever... everybody has their agenda...
Ride yer' own ride...
... as long as your tire pressure is between 20lbs and 50lbs... it ain't gonna' change yer' life...
Lower than 20lbs,.. you could slip the tire on the rim,.. and cut your valve stem, or pinch the tube...
Higher than 50lbs, you could blow on a pothole or curb...
The rest is up to you... not the tire company or bike maker...
Everyone has an agenda,.. but, it's your bike...
Bike tires wear out so fast,.. nothing else really matters...
The center patch will go before you use up the tread...
... and the sidewalls will rot away,.. before you any damage running low...
The difference in the life of a tire, is a couple of thousand miles either way...
I'd rather get new tires,... than replace bearings, or fork seals, shocks,... even frames can crack, if you hardtail... or limit fork travel...
If the tire pressure is harsh to you,.. it's twice as harsh to your bike...
... but,.. if your tire pressure has you squirrly on the road,.. it's a danger...
Less math,... more gut...
...
JMHO...
PS... semi trivial trivia...
Those nuts on your valve stem,... are for installation purposes only... they aren't supposed to be tightened down after install... (even mechanics tighten them down)...
They should be screwed up, to mate with cap after install... this allows a tiny bit of shift before the valve is decapitated,... in the case of rim slip...
...