No, the real answer is prosecute/investigate them all and let the evidence / trial decide..
1. There is already the Jan 6th Cimmittee looking in to Trump isn't there? He was already impeached (and Acquitted), but we still have the ongoing Jan 6th Committee that is still progressing, so why would he need to call for something already being dealt with?
2. Covid killings - Well all leaders get a buyout from them, every nation made some 'decision' based on 'whatever' and all we have is a league table to say we who feel did better or worse just purely on deaths per capita.. Shame we couldn't do this in come cases, but it'd never stick, it would be like prosecuting a prime minister for going to war.
3. In 2020 Fauci claimed "the NIH has not ever and does not now fund gain-of-function research in the Wuhan Institute of Virology.” and the US Intelligence committe at that time said “it concurs with the wide scientific consensus that the COVID-19 virus was not manmade or genetically modified”. It turns out that A. The NIH did give an award for this to a US based company that used the Wuhan Labs (since 2014, which was renewed in 2019), and the deflection that it was not man made was also later found to be non sensical with absolutely no evidence found to support that, but plenty of evidence to support it was a Wuhan lab leak. I'd say that this was dis/misinformation on a huge scale and actually I think Fauci has something to at least be investigated for, so if that took a prosection, so be it, and the truth will out.. It's not a conspiracy theory at this point to say the Virus originated in the Wuhan labs, the bone of contention now is was that NIH award directly connected to the research that led to COVID-19 being developed (and accidentally leaked). A fair criticism and something I think should get clarity on.
I will say I think Musk should tone it all down, he might have a history of hot takes etc, but I also don't find his posts helpful either.
It would not surprise me to find he does this, but let him get called out, he wants transparency, give it to him..