Just the News is a garbage website that spreads misinformation and conspiracy theories, and this article in particular is light on verifiable statistical analyses of polls and relies heavily on the supposed authoritative weight of pollsters Scott Rasmussen and John McLaughlin insisting that something isn't right. The obvious response is that neither Rasmussen nor McLaughlin are neutral, objective observers giving their sincere professional opinions. They're both Trumpworld stooges whose continued relevance in the conservative mediasphere (mediaplane?) relies on them telling their audiences what they want to hear. Trumpworld does not tolerate bearers of bad news.
I also really like how a big part of this article is devoted to their incredulity that Kamala is more popular as a presidential candidate than a vice president. There are several elements that can explain this discrepancy. Firstly, and most importantly, the vice presidency is a very difficult job for anyone to distinguish themselves in. It's primarily a supportive role where they don't spend much time in front of the camera or publicly "doing" much of anything, and are mostly expected, at least in recent years, to represent some element that the president themselves lacks. Hence why Obama had an older, experienced senator as his VP, why Trump had a very openly religious establishment Republican as his VP, and why Biden had a younger woman of color as his VP. It's more than possible for a vice president who's mostly stagnating in the president's shadow to shine once they start campaigning for themselves as president. There's also the fact that Trump's campaign spent so much time hammering Biden on his age and frailty while he was running, and so switching Biden for Kamala has turned Trump's advantage into his disadvantage. And there's of course the candidates' vice presidential picks - Kamala made a good choice, while Trump made a terrible choice.
Of course, it's always good to have some skepticism of what the polls are saying, and make sure you vote no matter what. It's weird how McLaughlin claimed in the article that this was all an effort to suppress Republicans' votes, when falsely presenting Kamala as doing better than she really is is more likely to hurt her than help her by possibly making her potential voters complaisant.