Tom's should really cover the consumer backlash. It's not just Apple phone owners who can't use ECG, it's also Android users.
The Samsung forums are swamped with livid Active 2 and Watch 3 owners who feel they were promised features they are not going to get. Samsung still has not publicly stated that compatibility with non-Samsung Android devices will not be forthcoming (or will be?); consumers are finding out for themselves. Active 2 owners are particularly upset because they have had to wait a year for ECG. To top it off, Samsung continues to keep owners in the dark about the missing blood pressure feature the Galaxy 3 was said to have.
Forum threads are clambering for lawsuits to be brought against the tech giant. Could they have a point? Samsung is the only maker of a mobile device to be put on the no-fly list because it kept catching fire in flight. It took class actions and legal banning to stop manufacturing the ill-fated Galaxy Note 7. And Samsung's last CEO, Lee Sang-hoon, is in prison on corruption charges. So, perhaps Samsung only responds to the threat of law.