I doubt that, because in that case he would admit that he was wrong all along - and given that he is up to his neck in gold, such an admission would be bad for his job.
Peter Schiff has his job relates to gold and he dislikes or hates Bitcoin because he sees its potential to take over a first position of gold in market cap and favorite choice of investors. Since 2009, after many years, people now can see Bitcoin is no longer risky at the same level it was created in 2009 or a few years after that. After 4 Bitcoin halvings, and four market cycles, Bitcoin now is strong and investors can see less risk if they invest their capital in Bitcoin.
Seeing less risk, while ROI of Bitcoin investment is far better than ROI of gold investment, it's really hard to don't choose Bitcoin.