Dropbox is offered on the ARM menu for 4K pages in quattro
Pull request 15757, merged into quattro, offers Dropbox on ARM when the page size is 4096. birkskyum wrote that the client starts on a Yoga Slim 7x and reaches its link prompt in about 10 seconds, and that he did not link an account.
The aarch64 package runs Dropbox's x86_64 client under box64, but the menu was offering Dropbox on x86_64 only. The merged change offers it wherever getconf PAGESIZE is 4096. Nothing changes on x86_64.
birkskyum wrote that box64 cannot run that client with the 16K pages Apple Silicon kernels use. The pull request says the installer's packages already resolve on ARM.