This is a tracking bug for Change: Scale ZRAM to Full Memory Size
For more details, see: https://fedoraproject.org/wiki/Changes/Scale_ZRAM_to_full_memory_size
Fedora 33 enabled zram by default. The size of the virtual swap devices was set so that the amount of memory used for compressed swap pages was limited to a quarter of physical memory in typical scenarios. That size is now increased to half of physical memory (zram-fraction becomes 1.0, max-zram-size becomes 8 GiB). This allows systems with small amounts to successfully launch the Anaconda installer and other programs.