They started to get OK reliability in the 80s which meant they started to become popular as value for money motoring. They got pretty common on UK roads. Popular and reliable enough to become a common choice for private hire use. Which as many at the time noted, meant Skoda had the last laugh.

The price advantage faded after the VW takeover, but they remained popular as private hire cars.

I didn't know that until the last decade or so they were seen as poor vehicles elsewhere, to the extent as to become the target of jokes. Thanks for the context – it definitely helps me understand better how this fits into OP's point.

The context of the era helps too, no 70s and 80s mass market cars were without a weak point or six, and jokes on the back of those.

Eastern Bloc makes had poor consistency, technology, and sometimes reliability compared to others. Applied to Lada, Skoda, MZ motorcycles etc. Simple tech also meant simple to fix of course.

Italian makes were beautiful but rusty before even getting to the showroom, with just as poor a rep for reliability and build.

Japanese makes didn't rust, but they couldn't weld and used bolts made of soft cheese pretending to be steel.

British and French? No one knew, they were on strike. ;)

Outside the eastern block countries, Skoda was the punchline of jokes and generally considered one of the worst cars you could buy up until the mid-late 90's when they became the Volkswagen budget brand. It's really only since the early 2000's that Skoda became a brand people wouldn't be embarrassed on being seen in.

I never knew that until very recently they had such a bad reputation in other Western countries. Thanks for clearing this up for me!