But it does. My most recent journey from Dusseldorf to Cologne was delayed (as were many others) due to problems with the overhead lines. They seem to have all the problems we do such as broken escalators at stations, toilets on trains out of use, sardine conditions at busy times.
I said:
"... How many times have posters when hearing of OLE problems said that it would never happen on the European mainland, ..."
I didn't give any credence to such irrational statements.
I've seen the occasional problems on continental European rail myself but they do seem take the quality of OLE hardware a bit more seriously in my experience.