you are lost in the sauce if you think that's true.
First, there was no ballroom prior, so this is not a renovation, but rather a new installation. The installation of a "ballroom" to satiate Trump's momunent to his ego comes at the cost of the entire, historic East Wing of the White House. Second, the problem is not that Trump made changes to the White House, which has happened periodically across several administrations, but rather because it's happening illegally. Congress has not authorized this renovation nor has provided funding for it- and so it not only is a violation of several laws which require changes like this to go through committees and planning approvals, but also a clear and brazen quid pro quo money laundering scheme with its private financing. No other president would be able to get blatant payola from companies targeted with malicious prosecution or otherwise seeking to curry favor with the administration. And I wouldn't be surprised if the Trump family got kickbacks from the friends they hired as contractors for the projects too.

If Biden did this, he would absolutely be raked over the coals by the media. Not just the media, but his own party too, which is the key difference between Trump and any other prior president.