ABOUT SPACS... "America is experiencing a cash box boom, with exchanges in Britain, Europe and Singapore eager to cash in on the phenomenon. Australia, meanwhile, sits on the sidelines with no plans to join the new financial gold rush. In the US there is a boom - some say bubble - in SPACs, or “special purpose acquisition vehicles”, listed shell companies probably more familiar to Australia investors as the “cash box companies” last seen – before the ASX and Australian Securities and Investments Commission effectively prohibited them – during the sharemarket boom that burst in October 1987....." ....more.... https://www.smh.com.au/business/ban...-rush-to-join-a-new-boom-20210125-p56wmb.html
Well now that it's a gigantic heavy heavy heavy weight to the s$p when tesla finally falls over 50% the s$p will be feeling every piece of that collapse.
The only absurd valuation of spacs are the ones you buy and then you lose money when closing the position. With hindsight you will say the valuation was absurd. If you make money you will say it was a reasonable speculation.
We cannot say that they are absurd or anything, but eventually it depends if you want to believe them or not.