Are We Now Immune to Irony? Or possibly good taste?

I get my hair cut by a nice young guy, who somehow turns my savagely curly hair in to something presentable and manageable: he actually makes me look pretty good (comparatively).

The last time I was in for my monthly cut, the young man in front of me had requested, and was receiving, the sort of long-but-heavily-styled haircut that was just the thing in the 1970's. It thankfully fell far short of an 80's Flock of Seagulls hideousness, but coupled to the weedy early-Movember moustache, he only needed walk-shorts and long socks to look a clone of my 5th form Geography teacher.

I'm not sure in what universe the 1970's school-teacher or MOT officer (remember them?) look is now cool, but here we are. 

I asked my barber what other ironic haircuts he was seeing, and he replied that he was also doing a lot of mullets but, as far as he could tell, they were both fashionable, rather than ironic. 

Words kind of fail me about the demonstrated fashion sense, but it did give me pause. 

In the 1970's, when long hair was the fashion, I got a contrarian buzz-cut my last year at school. The teachers couldn't tell me to get my hair cut, but you could tell they didn't like it, even if they couldn't actually frame why in any way that didn't make them look foolish. 

Looking at old photos, I just look like an averagely optimistic and gormless very young guy (which I was) with a uniform fuzz of hair. 

Not sure those who look back in 30 years at their 1970's guy-who-can't careful coif, or neo-bogon mullets, are going to be so fond of the results.