They solution IMO is not to rely on default browser fonts but rather to pick a stack that’s available at the OS level. On my site for example, I designed every

They solution IMO is not to rely on default browser fonts but rather to pick a stack that’s available at the OS level. On my site for example, I designed everything using Iowan as my main font because I know that it’s available on most Apple OS but then I manually picked a few fallback fonts that should be available on Windows, Android and the rest. Default serif is just the last option if everything else doesn’t work.