This fact, in and out of itself, is not really a problem. It is common that intel agency sat on their findings, and let some foreign news outlet report them.
It is common that Japanese media reports news from S. Korean sources, but S. Korean media did not get it first. By the same token, S. Korean and Japanese news media report news sourced from U.S. sources but U.S. media did not break it first. There are many N. Korea related news reported by S. Korea, quoting Japanese news media whose source is in S. Korea. U.S. media reports news on N. Korea, first reported by S. Korean media whose source is American.
This kind of things happen so often that I do not see it as a problem. Their credibility is just as good as any other news on the average.
I don't know what other problems it had in the past, but this is not the one.
They said this is from USA/Japan source yet there is not a single USA/Japan source to confirm it
Note JL-2 is not some small tool, its the SLBM targetting USA so the USA news agency covers EVERY SINGLE JL-2 launch tests, failure or not, yet nobody in the US report this wierd failure, only this third rate Epoch-time like “news agency” get this?
Let me tell you something:
The JL-2, just like the majority VLS systems in the world, lunched to a angel that not vertical to the ship, so even if it fail to power up, it wont come right down on the ship, it will travels a parabola, VLS launch system has already designed to avoid such failure, the “news reporter” has zero knowledge about a VLS system like JL-2 to make such amatuerish mistake when he write this science-fiction.