Ever since the parent company of former President Donald Trump’s Truth Social platform went public on the Nasdaq Composite in late March, its share price has gone steadily downhill. And in a recent interview, billionaire investor Barry Diller slammed both the stock and its buyers. After the rollout of its initial public offering (IPO), the Trump Media and Technology Group stock — trading as $DJT — traded for nearly $70 per share. However, it’s since dropped to less than $50 per share, losing approximately $4 billion in value. And doesn’t appear to be rebounding anytime soon. Diller told CNBC t…