You're very wrong, each witness had plenty to offer, and all under oath at the risk of their careers. Fiona Hill revealed the contempt that John Bolton had for Rudy Giuliani, reportedly calling him a “hand grenade” and calling his back channel efforts to pressure the Ukrainian government a “drug deal.” This has been spoken of in the press many times.
In her closed-door testimony, Fiona Hill claimed that Gordon Sondland was “a counterintelligence risk,” saying, “He was often meeting with people he had no information about. It’s like basically driving along with no guardrails and no GPS on an unfamiliar territory.”
The most important things to take away from her testimony was in her opening statement which is printed in the New Yorker.
“President Putin and the Russian security services operate like a super PAC,” she said. “They deploy millions of dollars to weaponize our own political opposition research and false narratives. When we are consumed by partisan rancor, we cannot combat these external forces as they seek to divide us against each other, degrade our institutions, and destroy the faith of the American people in our democracy.” “Russia’s security services and their proxies have geared up to repeat their interference in the 2020 election,” “We are running out of time to stop them. In the course of this investigation, I would ask that you please not promote politically driven falsehoods that so clearly advance Russian interests.”
Fiona Hill clearly stated the idea that Ukraine organized interference in the 2016 election was part of a disinformation campaign started by Russia in early 2017.
It doesn't matter who in the administration reportedly said that Putin told Trump this in 2017, because we have the foremost expert on all matters pertaining to Russia confirmed the fact that it was Russia that opened up this disinformation campaign in 2017 in order to blame Ukraine for meddling in our election.