Unable to install on Apple M1 without Rosetta

Reproduce:

1. Boot a clean enough macOS (without Rosetta) on a M1 device (e.g. M1 Mini 2020).
2. Download the latest stable installer: v1.20.3.
3. Open the package from Finder (or by the open command from Terminal).

Expected: the installer runs normally, the same as on x86_64 Mac machines.

Actual: the installer suggests to install Rosetta which should not be necessary to run (and hence install) the fat binaries; if I refuse it, the installation fails:

Technical note: our release engineer told that to fix this it is necessary to add the following line to the Distribution.dist source file of the the installer:

    <options customize="allow" require-scripts="true" hostArchitectures="arm64,x86_64"/>

Cosmetic note: the version 1.0 seen on the screenshots above seems wrong. I'd expect to see 1.20 or 1.20.3.