It's all about reliving their glory days. I think it was Bernie Goldberg who Pointed out that many in the media Are trying to do the same. They were young reporters during the Nixon era and seek to bring down another republican president to top off their careeers.
That is obvious, they want to become bigshots like Woodward and Bernstein, Watergate was the media power High point.
The entire left wing remembers that era fondly. Hillary Clinton herself was on inquiry staff advising the House Judiciary Committee on impeachment during Watergate.