I despise Biden and what he has done, but assuming this is some cover up for Biden when there is legitimate coverup evidence to be focused on is silly.
There are conspiracies out there, but everything is not a conspiracy.
Yes speculating on Biden’s motives. I am sure in my opinion that Biden knew, the US Navy knew very early into this which means Biden knew. Take that for what it is worth.
As for the motive, given all I have seen from his regime I see it as no stretch at all to presume he used it as a convenient way to distract from his son’s new cycle.
It is not as far-fetched as you seem to present it as.