> Tauri doesn’t seem to be able to create Mac universal binaries from their arm64 and x64 subcomponents.

I think this problem will be “solved” on its own. According to the October Steam hardware survey, about 15% of macs are still on Intel, with the number dropping each month. In a year it’ll be less than 10%. The software side isn’t looking good either - Intel Macs have received their last OS update this year. In 2028 Apple will classify Intel Macs as “vintage”, ending most service and parts support.

I’m not making a judgement here on Apple’s decisions. But Tauri is unlikely to spend their time optimising for a small fraction (Intel) of a small fraction (mac users), which is also reducing over time. Their time is probably better spent getting Windows support up to scratch because Windows isn’t going anywhere.