Yes, it has other potential uses than Ponzi scheme. However, when it’s advertised as a probable positive ROI it comes from being a ponzi. If that’s not accurate enough, one could then say that it’s remarkably ponzi-esque.
Id claim some hypocrisy in that one shouldn’t advise crypto while disavowing a Ponzi scheme as both result in monetary losses and are supported by aggressively false advertising and new entrants.