Could be. Market is experiencing a lot of down fall and these VCs are pobably saving some funds to be not able to liquidated their asset slowly. We can see some exited due to potential fear but of course, there are wrong factors such as project investment mistakes. Its not like they are careless about it but of course they are trying to save as much as fund as possible to be safe in a bear market.
But deleting traces on the internet means something nefarious. I hope what I am thinking isn't correct but probably they are either getting broke and deleting proofs or just staying out of regulations way. I hope it was the latter because if it is the first, we might see another scandals in crypto industry.