Part of the irony here is that Elon Musk himself seems to be "speaking plainly" and receiving death threats for doing so. But I assume you'd prefer he didn't speak plainly...?
I guess it depends how you define "plainly". Musk is right at the forefront of spreading exaggerated or misleading claims. Condoms to Gaza, Power's 30M, tens of millions of dead people receiving social security. He's not new to it either - remember him alleging that the scuba diver who saved those Thai kids was a paedophile?
Oh this is an easy one! Ruining lives by firing lots of people while destroying the economy, and endangering health by doing things like eliminating Ebola prevention funding and totally screwing up the NIH health research structure.