I watched one of the youtube demonstrations it's like a World War 1 recording or something like that a very old footage and they are using this bundle to reduce noise/hiss hum, etc...
It was disappointing
To be honest for me nothing does a better job reducing background noise or hum or like eliminating like a "static electric noise that constant buzz" is WaveLab 6.1's built in DeNoiser,
OMFG how many times did this save me from listening to hellish noise like recently I fixed this youtube video's sound this is the original check how annoying the constant electric noise is it's like an irritating buzz but Wavelab's DeNoiser removed the annoying part it does true magic

Yes it's about trading I love TA videos (Trading Analysis)

 

That shootout had a "Case fan noise" removal test, speaking of WW1. Who in 2025 has case fan noise to deal with?

It's always better to do offline processing for this stuff, directly to the waveform. Realtime noise removal is a waste of cpu. This is why your DAW lets you setup an external wave editor (RX) to open files in your project, process them, and reload the results. Even selection-based processing can render directly to the track in the daw.