Why would their participation on this forum be an indication of success or failure?
Certainly participation in this forum has nothing to do with the commercial success or failure of his idea /products.
On the other hand, it does have everything to do with telling us about it.
He started a thread in 2017, made a fairly lengthy post telling us about his Ring of Fire round, and the progress he has made, one assumes to interest the folks here in the idea, and then has not come back, to date.
if he were successful I would think he would have come back and told us.
If his project is keeping him too busy to make a simple post on TFL, I'd say he's not successful, yet....