It changed hands again last year. I tried it again; it was fine.
But now I've learned how to get a rear windscreen wiper this shape:-

You have to break something:-

And there's collateral damage:-


The wiper had been caught by the 'fronds' on the large horizontal roller, torn off and wrapped around the drum. Luckily, there was no vehicle behind me: I'd hate to think what its paint would have looked like after being washed by a steel wiper arm.
I still don't know how the Integra's glass survived when the die-cast boss was pull hard enough to tear.