What he described in that tweet ("My wallet got corrupted somehow and my password is no longer valid.") is like saying "I dropped my gold bar in a furnace and it melted into the liquid metal in it, so it is no longer usable". His statements are that stupid!
There is a correct way of using everything, if you don't know it, then you should learn. A bitcoin wallet offers easy recovering options including creating a physical backup. In fact wallets encourage, some like Electrum force, you to write down the recovery phrase. If someone intentionally refuses to do so, it is their own fault to have lost their coins.
P.S. by the way the only thing I got out of this tweet is that all the FUD Shiff spreads about Bitcoin, he obviously has admitted to have owned bitcoin. Isn't that hypocritical?
P.P.S. Another interesting thing about that tweet is its date. 19, Jan, 2020. For 6 months bitcoin was in a bear market and kept going down. By January it starts showing the first signs of reversal and starts going up from $7100 to $8400 heading toward $10k resistance... Shiff strikes with his at that time FUD