The corners that are cut are often around automated testing, security, best practices. And it adds up, so if nothing is done right then it’s faster to keep doing it wrong than rearchitect or abstract everything so you can have a clean implementation.

Honestly, I haven’t been working that long (about a decade) but this general attitude from PHBs calling the shots in software makes me count the months until I can retire early and never write code for money again. It’s just soul sucking to fight everyone on this and then fight again when overtime is needed to add more bandaids to the resulting abomination because the date won’t be met.