I guess you didn't watch the video, in addition to having a limited amount of experience.

A half of bushel of seed per acre is more than adequate to produce an abundant crop.  That amount of seed per acre is never the limiting yield factor when dryland farming in semi arid areas.

As I grew up Dad spoke of a neighbor who planted 17 lbs/acre and grew great crops.  Adequate seed bed preparation was/is critical, along with having good viable seed.  Those old varieties did well. With good rain, 40 to 50 bu/acre yield was every bit as likely HERE as it is today planting at much heavier rates.  If the wheat stools out good, there is plenty of plant population, planting at too high of rate limits the stooling and is counter productive when the seed is planted early enough to get good growth in the fall.

Fertilizer is seldom a limiting factor except in years with an abundance of moisture.  That rain is most often the limiting factor; along with that hard water.