As someone in the industry, it's almost certainly not . First very simple point, to become insolvent you have to actually take a loss somewhere. They may have a lot of junk tokens on their balance sheet, and these tokens may be overmarked, but Alameda's cost basis (most of them were from seed rounds) is still way below their current value. With Three Arrows it was very obvious where the loss was from, they were hyper…
No... We know that they owe $650m USD to Voyager Digital and they haven't repaid it yet, instead after failing to bail out Voyager, SBF is trying to acquire its assets with a VERY shady scheme through FTX.
We also know that SBF has spent a lot of effort to bail out BlockFi, and I am confident they are one of Alameda's biggest creditor, we know that BlockFi only lends stables, BTC, ETH and a few other bluechip coins, no FTT, MAPS etc...
So everything is indicating that Alameda's liabilities are in USD/BTC/ETH, while their assets are FTT, MAPS, a few SOL and other low liquidity "shitcoins".
Seems like what Alameda was doing is to take out loans to pump some shitcoins and mainly its own (FTT).