Good point. My main point is perhaps that this shouldn't be up to one dude that loves crypto assets – that there should be a signal community making decisions.
Being a centrally-guided product over a community project has been an intentional core characteristic of how Signal is run from the start though, so that's pretty much against the principle for it. (outside of the level that companies listen to user community feedback)
Trevor Perin created both protocols. Noise isn’t an asynchronous messaging protocol. So it won’t replace Signal. WhatsApp use Noise and Signal together.