I sort of agree with you in that regard. That doesn't mean they weren't told that by a credible source at Apple. You think they just made it up? Really? It's not Info Wars--it's the WSJ. What are they supposed to say to their readers? A disclaimer? "This might sound crazy, but..."
Yes, journalists have a responsibility to perform due diligence in their reporting.
At the very least, qualify the more outlandish statements with disclaimers e.g. "many sources corroborated that...".
Passing off outrageous claims -- that doesnt pass the sniff test even to us outsiders -- in a careless and blase' way is irresponsible.
ESPN for a long-time used to be about sports reporting. Their programming told us with stats and facts what transpired in games. When the internet came about and provided everyone with easy access to that information, they morphed into sports opinions and pushed debate-shows hosted by raving lunatics barking controversial opinions based on rumors, tweets, and drama.
It turned into tabloid entertainment. And a respected newsprint like WSJ shouldnt degrade itself to that level.