[michaelmrose]

If I understand correctly this is true for the memory allocated by the os to cache files which makes intuitive sense as a file can just be read from disk if needed.

Its not clear to me how it would apply to other memory how does the os communicate to Firefox that it needs to clear out some memory for Chrome save by moving less used pages to swap with the probable high cost, of moving it back later. Further while some intelligence may be exercised insofar as which pages to swap it won't be made with the benefit of the app deciding which chunks of data to keep closer at hand.

Modern memory works the same way it always has and the best performance has always been maintained by staying within the boundaries of available ram and not needing to swap much.

When most computers have no more than 8gb of ram and consumer machines are likely to have 4 its kind of silly for a chat app to use 1-2 sillier yet to claim that the os will fix the matter.