It's completely ridiculous that I can't use my mobile banking app for day to day low risk, low volume transactions if my phone is rooted, yet I can do anything and everything with high values of cash and credit from a Linux machine running any web browser I wish, as root.
The reality is, the mobile app development is outsourced to incompetent teams for presumably the lowest price who "ensure security" by just saying, "lets chuck a library in that prevents running if the device is detected as being rooted, and call it a day".
These are protections any reasonably technical user can circumvent with the likes of Magisk and still, all to do far, far less damage than is possible than if they were to use a web browser.