Yes the current talking point issued for the TDS infused and malevolent left is that "Trump is taking a wrecking ball" to the White House. Pretty much all Presidents leave their particular mark on the White House. FDR installed the swimming pool, eventually covered over for a press briefing room, reopened by Kennedy, then an outdoor pool installed by Gerald Ford along with a tunnel to get to it, Nixon's bowling alley, Obama's basketball court etc.
The ballroom is being built with private donations, including from Trump himself, and based on the attention to beautiful detail in other structures he has built, in my opinion will be a lovely addition to the White House and especially useful for entertaining visiting dignitaries.