It still has its place! While the article wasn’t advocating them for front line cavalry charges, it did show that well... they’re still using them. Kinda of says something towards their effectiveness in its own way.
I like shotguns for the versatility. In the olden days if you was a poor farmer and only had one gun, it would’ve been a shotgun. Squirrels, bucks or intruders.
Shells are cheap, everybodies got them, perfect for SHTF