I agree, unfounded, or poorly supported, or limited claims of voter fraud are a problem.And luckily the courts are there and perfectly capable of handling these situations. As they did, with the 2020 election.
The courts heard the challenges and asked to see evidence of voter fraud. Very minor examples of irregularities were presented. In one case, the vote was corrected and it put Trump even further behind his original count. There was a FULL recount in one state, as I recall.
So the democratic system works, which is what's so great about this.
Unfortunately you have characters like Trump, Roger Stone, Steve Bannon who still push the false story of "voter fraud" and cause direct harm to the democratic system, and that's the real problem. These are people who operate 'in bad faith', and now they've brainwashed millions of people into thinking there is a great injustice here, when there is absolutely no such thing.
However I do believe that there are legitimate concerns.
These are two distinctly different concerns, and while some think they are the same issue (and for some people they are) they really are different.
I think an election that allows significant numbers of voters to vote, without showing any form of ID, is suspect.
To reiterate, this IS LEGAL, I'm not claiming that laws were broken, I just think voting without proving your identity or right to vote is a bad idea.