Because you were lucky enough to avoid the worst parts:
- Paris: https://www.google.com/maps/@48.8235336,2.3674101,3a,75y,342...
- Marseille: https://www.google.com/maps/@43.2890541,5.437606,3a,75y,185....
- Toulouse: https://www.google.com/maps/@43.5804085,1.4105313,3a,75y,287...
Tolouse is not pretty - one of the Corbusier's or Corbusier-inspired crimes, but at least it does not have the scale.
That said even a tall and long building doesn't have to be dramatically bad https://en.wikipedia.org/wiki/Falowiec#/media/File:GDANSK,_F...
I live in Paris; believe me, the best and the worst are two streets away. There are quarters in the 18th or the 13th that make OPs photo look like a dream.
https://itinerrance.fr/app/uploads/2019/05/head-fresques-bou... https://p1.storage.canalblog.com/11/75/1224518/120815785_o.j... https://www.blackandwood.fr/wp-content/uploads/2016/03/Paris...
Now there is a lot of subjectivity here, and to be honest, I'm not fond of the Warsaw building either, so I might be a very poor judge of modern architecture.