It would have been better if this committee was not so one sided, lacking balance and due process. I would have preferred, like in legal criminal trials, both the prosecution and the defense could each make a closing statement so the scales of justice are balanced. One can then have all the data and not only one side.
One-sided? The sides weren't Democrat versus Republican, but pro-Constitution, democracy, and the rule of law versus the opposite - MAGA Republicans. This was an investigation into what happened January 6th that the MAGA Republicans understood would expose Trump and others as criminals, and they did what they could to block the investigation. Then, when they couldn't stop the House from proceeding, they tried to scuttle the investigation from within.
When that failed, Kevin McCarthy voluntarily ceded his five picks in a snit, and freely signed off on letting Pelosi choose the committee members. She chose a bipartisan committee comprising people who consider insurrection a crime. They had no interest in including people determined to undermine the factfinding process. That "side" wasn't welcome to participate. Neither was Putin for the same reason.
Yes, it was a bonehead move by Republican leadership to not put five members on the committee as they were invited to do. As a result, ahead of the hearings, the MAGA Republicans didn't know what the committee had, couldn't prepare defenses for Trump, couldn’t influence the direction of the investigation, couldn’t ask contrary questions during public or private proceedings, couldn’t leak anything, and couldn’t dilute the panel’s findings in advance of a final report. But that was by choice. That was an unforced error from a MAGA perspective, but a godsend from a pro-Constitution perspective.
Furthermore, nothing was preventing the Republicans from doing a parallel investigation like the DOJ was (and still is) conducting if they felt the committee wouldn't do a comprehensive job of uncovering relevant evidence. The obvious fact is that they knew that the committee would not find any exonerating evidence, and neither would they except unless it was among the contents of Hunter Biden's laptop.
Nor are the MAGA Republicans prevented from making a closing statement. It just won't be included in the committee's report, and didn't appear during the televised hearings. And if they like, they can submit amicus briefs during the criminal trials in defense of the accused insurrectionists, which are also not partisan procedures. Also, Trump et al. will have legal counsel giving the counterargument to the committee's findings and recommendations as well as the DOJ's criminal cases. It doesn't get any fairer than that.
The plan from the start was apparently to try to diminish the impact and credibility of the committee by refusing to participate and making it appear partisan - all Democrats. Then Pelosi found two Republicans interested in protecting the Constitution, but the Republicans still went ahead with that trope of partisanship anyway, which has apparently influenced you judging by your objection above. You seem to see the process as unfair.