I guess it depends on what you categorize as a return on investment.

For Youtube, I'm not monetized yet but this tool and automation helps me with creating content so I can get there quicker.

Regarding monetary ROI I can say that it's hard to measure. The content I create with this tool drives traffic and views to my articles, and I have seen an uptick in my medium earnings so I do think there is a positive ROI - but it's hard to say that the tool was "directly" correlated to it. I invest in the tool personally to have a high return on time rather than investment - just being honest.