There are extremely few uchideshis (live in students) if any today, with free meals and such. Not even high level mukansa like Gassan or Yoshihara provide anything to their deshis. So they will have to pay for everything out of their own pocket, and it this is the traditional system of today.
I am curious to understand how some judge these blades as machine made with such self-confidence.
The #2 is even having a welding flaw, so it indicates a "handmade" in my eyes.
Also, why presume they are cut in half by the government?
Some cut their own swords to be able to keep them during the occupation, so not only un-traditional swords got cut. Or perhaps they are broken in battle
I found an oshigata of a unique blade with marumune, an Ohira-zukuri with a yokote. Made by Yosozaemon no jo Sukesada of Bizen. (the most skillful of the Sukesadas) According to the attached text it is unusual with marumune on Honba-mono, more common on Waki-mono. (Honba-mono, a center and well known swordproduction place. Waki-mono, made far away from such well known places)
But sometimes Marumune appear on Sue-Bizen blades.
I have heard marumune is "rural style" , but also popular on womens tanto. Recently I saw a sword specially made to a temple (forgot to wich and by who). I also believe it is easier to make than iori.