From what I've seen, very buggy currently, and unknown how well they will be maintained. They're definitely not at a stage where adobe should be worried about their revenue, and there are foss alternatives for most adobe tools, that are better than these reverse engineered ones. But if they continue maintaining them and fixing the bugs, who knows, maybe adobe really loses some part of their customer base (although a lot of their individual tools have already been moved to the cloud, thus they can't be reverse engineered anyway)