Because of macOS v12.7.2 and Electron support, I’m assuming you can’t use a newer installer beyond v1.4.13?
According to What version of Obsidian is compatible with OSX 10.13.6? - #2 by holroy it looks like macOS 10.13.x and Obsidian installer v1.5.3 can work together. As you’re using macOS v12.7.2, installer 1.4.13 or 1.4.16 may be the last you can use.
With the older versions of both macOS and Obsidian, I don’t know if the team will spend much time on this or even be able to test it out.
Beyond the Ubuntu link you found, did anything else bubble up specific to macOS in the older posts? There may be something if you dig a bit more.