I don't think Smooth has any lack of interest in attacking other coins that come off as shady, or scammy, but Dash is a very big one, so it deserves more attention. Then there is the fact that there are often Dash trolls posting lies in the Monero thread....
You are right. I've been extremely critical of all or nearly ICOs, for example. I consider that model to be sufficiently flawed by its nature that all or nearly all such coins can be considered scams by default, regardless of of whether or not any evidence of bad intent is visible. I guess those are marked on CMC as "significantly premined" so that part is good at least.