Can we use that as daily driver?
A clever developer making things work on his or her own hardware, is not quite on the same level as daily driver. (Granted, Linux would also have to run on M1 Macs. But I mean this more on the issue of same-hardware or comparable hardware level.)
I’m not sure anybody can use Haiku as a daily driver, regardless of platform.
Who is “we” and why do they matter in this context
One can reasonably infer that, since this is a discussion thread rather than a formal support announcement, that this is not yet a formally-supported configuration.