He stressed that the firm's six-year Bitcoin accumulation has yet to deliver the returns Saylor previously promised.
Schiff further highlighted Strategy's profit margin, noting that the big Bitcoin buyer is now sitting close to its average purchase price at around $75,500 per BTC.
As such, the Bitcoin critic questioned the performance of Saylor's long-term investment strategy and its future potential, particularly given his previous expectations of annual returns of around 30%.
Schiff reignites Bitcoin vs. Gold debate
Following his assertions, Schiff further introduced his long-standing Bitcoin vs. Gold argument, suggesting that Saylor made the wrong choice of asset for his investments.
He argued that investing in gold instead would have doubled Saylor's money over the same period, triggering fresh debates across the crypto ecosystem.
Schiff's statement does not come as a surprise, as he is publicly known for repeatedly questioning Bitcoin's potential as a long-term investment.
The sworn Bitcoin critic has often argued that precious metals, especially gold, offer a more reliable store of value than Bitcoin, consistently describing Bitcoin as a Ponzi scheme.