Apps on Android cannot influence other Apps or even significant parts of the system. They are confined by default an can only use resources by using the API to

Apps on Android cannot influence other Apps or even significant parts of the system. They are confined by default an can only use resources by using the API to request permission or they don't get access. On Linux Desktops any app can do whatever the user they run under is able to do and flatpaks don't change that since any restrictions can be circumvented trivially. The two systems dont really compare and Android is worlds ahead in regards to application security/sandboxing