Is it correct to say that the irony in line 17 to 19 of the poem is that all of the workers travelling on the train appear to be well connected

Is it correct to say that the irony in line 17 to 19 of the poem is that all of the workers travelling on the train appear to be well connected socially to each other that they are in fact lonely when they make way to 'the loneliness beyond'?

My view is of the irony present in these lines is that despite being in a crowd one can still be lonely and this is the them of the poem? Am i interpreting the irony and theme correctly?

The Loneliness Beyond by Sipho Sepamla

Like raindrops pattering 

They come singly and in pairs 

Then as a torrent the rush of feet 

Shuffles onto platforms 

Dragging the last strains of energy. 

I've seen hearts palpitating 

Behind a single maskless face 

Tired from the hurrying of a city 

Spirits maimed by commands

I've heard clicks of tongues

Laughter rising above the grouse of mouths

That never rest

From grinding complaints.

Like sheep herded into the kraal

They crowd numbered coaches

Hopeful of a safe landing.

I've watched the multitudes rub shoulders 

And I've wondered what they do

With the loneliness beyond;

I've seen throngs of people 

Disappear into little holes of resting 

And I've pondered what might be happening 

With the loneliness beyond