There may not actually be fraud, but strengthening the election system wouldn't hurt, and it would calm those who think there is and help stabilize the system during a tumultuous time in our country's history.
And putting in stricter voting controls will not stop people from crying foul. These people aren't working off the facts in the first place, so what difference would it make? If their people don't win they'll call it rigged. If these laws don't give them the result they want, they'll continue to claim fraud until they get enough of an advantage to ensure victory.
https://www.texastribune.org/2021/05/29/texas-voting-restric...
It creates the perception that it has nothing to do with ensuring the quality of the vote at all.
With anything political, you can almost always find politicians contorting them for their own benefit. That doesn't mean the underlying concept is bad, only the contortion is bad.
Mechanisms like mandatory voting and greater access to polling places (and holidays on voting day) are exactly the opposite of what is desired by those talking about voter fraud. So while there is much talk of voter fraud, those options are always off the table.
Voter fraud just isn't a significant thing in the US. The perception of it won't be fixed by dealing with voter fraud, one way or the other.
Unfortunately, that means that the real problem is much harder. It's a combination of authoritarianism, partisanship, and xenophobia, deliberately exacerbated both within and without. We don't get to spend much effort on the genuine issues because we're too suspicious of each other, and spend all of our time fighting about non-issues.