Twice now this specific Bloomberg guy has been outright confirmed wrong by Sony. And no, Sony wouldn't provide an official public statement to lie, otherwise they would get in legal trouble for doing so to their investors & shareholders.
The only person at Bloomberg worth listening to as an insider is Jason Schreir; this specific guy in question (forgot his name) should be a banned source outside of hilarious op-eds he writes in the future.
It really doesn't need a poll. Sony has literally nothing to gain by responding to a report like this, true or not. Best thing to do from a PR perspective is ignore it or try to shoot it down. Iwata used to do it all the time when Nikkei or Bloomberg would leak something way ahead of Nintendo's plan to publicly disclose things. It's common practice.
If a negative rumor is fake and threatens to cause a chain reaction dismantling momentum for a new product before it even launches, driving down forecasts and possibly affecting a public company's stock prices, then nipping it in the bud gains them the ability to procure optimal marketing & messaging of their own product, rather than let outsiders of dubious reputation try spinning it to hurt market uptake.
The difference between this leak and the Nintendo ones you're referring to is, those were probably not leaks that could have negatively impacted faith and uptake into the company's products planned to come to market. Things like "new Wii U specs" or a leak on upcoming Switch features aren't generally going to drive down confidence in the product or company's ability to deliver the product to market successfully. They aren't going to risk lowering the share value, or drive away consumer confidence, especially before the product comes out.
This particular Bloomberg reporter is 2 for 2 now in particularly (potentially) negative Sony/PS5-related "rumors" which have both been officially shot down by the company. At least when it came to the PS5 stock situation, we could maybe have pointed to circumstantial evidence (like decreased PS5 supply) to validate it
BUT, this reporter's particular reason was due to "bad yields", when in reality the reduced supply was down to lack of chip wafers to go around.
Takashi Mochizuki's reputation is now absolutely shot; there's not much for him to do outside of op-eds and maybe it's better that way.