Yes, the Sig P365 is a good choice for a handgun.
The only question I have about the article is the writer called the FN PS90 a submachine gun, which it is not. It’s a semi-auto chambered in 5.7 x 28mm.
They may have rented a submachine gun at the range.
I think it’s the weapon that popularized the term PDW. Personal Ddfense Weapon.