Considering about 20% of mail-in ballots have already been disqualified for one reason or another, a drastic change could be exactly what's needed.
Here's an atlantic article about it: https://www.theatlantic.com/politics/archive/2020/07/new-yor...
That said: I think New York is an example of why the debate about this is worth having. 20% of ballots getting tossed is catastrophic.
From your link
Patel said his campaign is looking at thousands of other votes that seem to be missing postmarks entirely—a post-office error... He sent me a photo of a box of 3,000 absentee ballots from just one part of the district that have been ruled invalid because they lack a postmark.
Personally I've heard a lot about the mail being an issue in NY.