In your song, Herb, I'd say the last two lines of each verse could be considered a two line chorus.

Regarding the article:)

'I often get questions about different song forms with the BIG question being “Does my song HAVE to have a chorus.” I always respond, “It’s your song – do what you want.”. The REAL question they are asking is if their song has to have a chorus in order to be commercially viable.'

There's always the exception, but yes, a commercially viable song in this day and age has a chorus.

I usually 'hear' the song and 'see' its form as I start to write it. I may only have a chorus to start with, but I usually know early on how many verses it's going to have, how many choruses, and whether or not there will be a bridge and whether it will modulate.

I have a short song set in the Civil War that has four verses. I sing it acapella. I performed it once in public, at this sort of 'beatnik' open mic deal. It might be viable for a TV show or a movie. Who knows.

My songs are here:
https://soundcloud.com/scott-h-olson