If Americans are to be confident that this inquiry is serious and fair, and not a last-minute attempt to overthrow the president before next year’s election, Schiff and his colleagues must let Americans watch it take place.
They aren't going to "overthrow" anyone; the chances of that happening fade with every succeeding day. They hope to damage Trump's election campaign, and it doesn't look much like that will happen either given the donor money flowing to Trump contrasted with the trickle toward the DNC. The danger is that impeachment will make that worse. Pelosi has said bravely that it would be worth losing the House to impeach, but would it be worth both losing the House and the Presidency? Because that's what a lot of people see coming.
They are doing as little harm to Trump as Hillary's comments on being a Russian asset did to Tuli Gabbard. Publicity is a good thing when it's done so badly by your enemies.
The article did get one thing right—the 2020 election is just a year away.
Starting an impeachment (whatever it is) a year before an election seems pointless.
The Watergate “process” (the last such effort) lasted more than a year!
A little Watergate timeline info:
—Televised Congressional hearings on the Watergate affair began on May 17, 1973.
—March 4, 1974—Nixon named as unnamed co-conspirator in Watergate burglar case
—March 18, 1974—The judge in the Watergate burglar case orders the grand jury’s sealed report to be sent to the House Judiciary Committee
—May 9, 1974—House Judiciary Committee impeachment hearings begin
—July 30, 1974—House Judiciary Committee passes recommendation to full House to impeach Nixon
—August 8, 1974—Nixon resigns after Senate Republicans tell him he cannot avoid conviction in the Senate (neither the House or Senate actually cast votes)