Prism has already committed to ONLY estimating a certain distance out due to availability uncertainty in the supply chain. I think it is reasonable for Purism to stick to this.
To expand on what Gavaudan was saying; my personal observation is that much of the frustration from past estimates stem from purism setting and then not meeting expectations and/or not resetting expectations promptly. (The details and examples of this have been discussed ad nauseam in other threads and if further discussion is desired, that is best suited for other threads; not to derail this thread)
I would like to see a bit more transparency from purism on the shipping progress this far, but that is a personal preference; partially stemming from how often I have seen purism tout it’s transparency. I’m not by any means saying what they should/shouldn’t do on that front just expressing my preference.
I also think estimates/predictions should have upper and lower bounds with confidence bands and beyond 6 months out should probably fade to grey as that is so much uncertainty as to be pure guesswork. A single line estimate often gets taken as having near certain probability/high confidence and in this case I don’t believe that is reasonable.