Cardano and Ripple have brought me good profit before, and now it's also possible to make money on them, so I would not call them unnecessary. In addition, hype does not happen in an empty place.
Yeah, well, I made good profit on XVG and that is as useless as a shitcoin gets

I'm pretty sure that at least Ripple sorry, I mean XRP will pump at some point. They have a completely deluded shill army which will gladly step in and help fire the pump with their hard earnings.
Tron does as well, but I haven't seen enough desperation for them yet.
I hear very little from Cardano shills. Maybe I don't frequent their dwelling places or something, or they just don't have that many.