There are exceptions, but in almost all cases, an application hacking the OS' RAM management is slowing down other applications disproportionally in order to make itself seem faster.
Shaming such RAM hogging applications is not just legitimate, it's very much necessary. Otherwise all applications would just reserve as much RAM as they can convince the OS to give them, even if they have no real use for it.
There is no checks for this in place, so users need to understand the technical implications and punish RAM hoggers by avoiding them.
If your application can utilize RAM to disproportionally speed itself up and therefore on average speed up the workflow of most users, then that's legitimate, too, and an informed user will see the value.
Shaming such RAM hogging applications is not just legitimate, it's very much necessary. Otherwise all applications would just reserve as much RAM as they can convince the OS to give them, even if they have no real use for it. There is no checks for this in place, so users need to understand the technical implications and punish RAM hoggers by avoiding them.
If your application can utilize RAM to disproportionally speed itself up and therefore on average speed up the workflow of most users, then that's legitimate, too, and an informed user will see the value.