It's also important to remember that Microsoft has no monetary incentive to force people to use Windows Recall.
With that in mind, there would be no reason for Microsoft to automatically enable Windows Recall in an update down the line. If it does happen, the user will be able to instantly tell thanks to that that visual indicator and turn it off again.
This article is nothing but propaganda. There is huge monetary incentive to force people to use Windows Recall and collect their data, and Microsoft routinely uses Windows Update to enable data collection. They began that practice years ago on Windows 7. It's a ridiculously simple matter for MS to disable the visual indicator and force This Week's Plan on their users to monetize their data.
Windows Central pretends to be critical of plans to enable a feature that can be made into malware by Microsoft in a couple of minutes, but then back peddles and says it can't be done (utter BS) and if it could be, it wouldn't be that bad.
Correct me if I'm wrong, but this doesn't look like this has anything to do with Syncthing vulnerabilities. Instead it looks like a hack that uses a preconfigured Syncthing installation to transfer sensitive data. Disturbing nonetheless.