A question.. Is this outdated ? I am going to clean up some on my PC/macOS as well. I found this one but I am using NS-USBLoader to do that. Is this really necessarily ?
No, it is not outdated (in my opinion).
I use it often and with pleasure.

I would argue it is not as good as its predecessor TegraRCMSmash but that is my opinion.A question.. Is this outdated ? I am going to clean up some on my PC/macOS as well. I found this one but I am using NS-USBLoader to do that. Is this really necessarily ?
why wouldnt it, its sending a payload from the pc to the switchIs this working with 1.5-2TB SDCards?
or an alternative tool is recommended?