Because space.
Because space.
Of course, in SI this is very straightforward: the unit of mass is the kilogram and the unit of force is the newton, which is the force acting on a mass of one kilogram experiencing an acceleration of one metre per second per second in an inertial frame of reference.
The pound a unit of force. It is also a unit of mass. Both units share the same name.
If I weigh 160lb on earth I'm told that I would weigh 26lb on the moon.
That makes sense if lb measures force because gravity affects force.
In short, this commonly shared "fact" is consistent with pounds being a unit of force, not of mass.
Or, I suppose, of lb at least sometimes being a unit of force.
I don’t know how to make the point any clearer that there are two units of measurement, both with the same name.
Also, 4 decimal points of precision is completely overkill. Maybe one decimal point at most would be more than enough, but most wouldn't even bother with that.
Even if 330 lb was exact, all those digits in 1467.9126 N aren't even correct. It should be 1467.9131 N using standard gravity. It looks like brudgers used 1 lbf = 4.44822 N which is what Google says but is only rounded to 6 s.f. so can't be used to generate an 8 s.f result.
It's very common to measure engine thrust in ton-force because it makes it easy to compare the thrust to the weight of the rocket, which is a critical metric.
And pressure in PSI and torque in foot-lbs because pounds are a unit of weight (i.e. force) not mass.