Legendary investor Carl Icahn, a vocal supporter of President Trump, tweeted Monday morning that Trump's inauguration speech was "brilliant" and left "no doubt our dangerous slide towards socialism is over."
Icahn seems to be referring to the past eight years under Barack Obama, a time when the government mandated health care coverage for all Americans and also put in place many reforms for Wall Street and big banks.
Icahn was named an adviser to the Trump administration last month, with a specific focus on undoing or softening some of the rules put in place during the Obama administration.
The Trump team said Icahn would help "American entrepreneurs shed job-killing regulations that stifle economic growth."
Some were quick to take issue with Icahn's claims on Twitter though.
A user named @Momma2 simply wrote "Have you read the reviews?" and tweeted a link to a column by leading conservative writer George Will, who dubbed Trump's speech "the most dreadful inaugural address in history."
And @urbanerogue wrote that, "yes Carl, both you and Donald have struggled bigly under the last few years of socialism, how about that DOW?"
The Dow soared about 140% during Obama's eight years in office. After bottoming out in March 2009, the market roared back from the depths of the 2008 financial crisis and Great Recession and is now trading near record high levels.
Related: Refinery controlled by Carl Icahn soared after Trump named him an adviser
Many experts say that Obama's policies deserve some, albeit not all, of the credit. Low interest rates from the Federal Reserve and innovation from tech giants Apple (AAPL), Google (GOOGL), Facebook (FB) and others in Silicon Valley also helped fuel the market's surge.
Still, some on Twitter defended Icahn and Trump. @jdcaetano wrote that "8 years of Democratic socialism should never have been inflicted on us! Let's move onward and upward."
And @Italians4Trump tweeted, "Thank you! You better believe it! Now we will go towards Capitalism, the system that made our country great! #Capitalism #EndofSocialism."
Investors initially greeted Trump's win as a positive sign too. Shares of Icahn's own publicly traded firm Icahn Enterprises (IEP) have surged since Trump won the election, along with the broader market.
But the market has pulled back in recent weeks due to concerns that Trump's isolationist policies could actually be detrimental to Corporate America. Icahn Enterprises is down more than 2% as well.
And Icahn even conceded in an interview with CNN's Poppy Harlow last month that he thought the market rally following Trump's win was "a little overdone."
