It’s not self dealing if you really love the building I guess. To be fair it was a matter of time before somebody loaded them up with debt and wiped equity. Might as well do it yourself.
If a company tanks right after being listed on the public markets -- that is, right after insiders got an opportunity to dump their shares on less informed investors -- most likely a serious financial crime has taken place. A real business doesn't go from a 47bn market cap to zero in ~2 years. It's not sufficient to make generic disclosures to investors that there are substantial risks and that you have an unproven business model and such. If it looks, talks, and walks like a pump & dump scheme it probably is.