There have been a few threads on the most secure desktop OS, and from what I understand the best is the latest stable MacOS on the latest apple hardware, although apparently that still isn't as secure as grapheneos on a pixel? It sounds like Android can be pretty secure, and based on the security preview release thread, it sounds like samsung is shipping some of the early patches, so that's why I'm curious if it's more secure than using a mac.
Once android desktop mode is stable, it seems like desktop mode on grapheneos will be the most secure desktop, but until then, what's more secure, MacOS on a mac, or Samsung dex?