I think this is where the strong disagreements stem from. If Brown is an MM level 3 point shooter, I think your concerns would be valid. However, there's plenty of reason to believe he'll
be a notably better shooter than MM. Maliq shot 36.8% from 3 last year, albeit on only 19 shots; MM shot 27.5% on an admittedly larger sample size of 40 shots. But as people always say, FT shooting often is a precursor for one's 3 point shooting ceiling, and on that front Maliq wins again: he shot 72% from the line last year, while Mark only shot 62.3% (and with a much higher sample size indicating that is a real indication of his shooting prowess). There's also the qualitative assessment that Maliq's shot just
looks better than Mark's, making me more confident that it could improve after a summer with the Duke staff.
For reference, Kyle shot 34% from deep last year and we considered him a good (definitely not great, nor as good as we expected) shooter for a big. If Maliq can even approach that, shooting something like 32% from deep, he'd provide adequate (if not optimal) floor spacing. I think there's plenty of evidence that that is well within the realm of realistic possibilities, which is why I think your
certainty (or at least what sounds like it on a message board, haha) is unwarranted here