My initial answer was "no," since full redos seem quite unnecessary. However after a moment I realized that that's sort of what errata can be for.
This is true. A5e has its own constellation of 3pp that specifically claims compatibility with that system. It's really been a boon to me, as someone who loves 5e 3pp but not 5.5.If a publisher thought that a product of theirs that they made in the decade of 5E14 was no longer generating the type of revenue they thought they might still get out of it... assuming cost was not going to be onerous I don't see any reason why the publisher wouldn't produce an updated second version to it that could include your standard "Usable with the 2024 5th edition rules" plus perhaps updating a little bit of their cover/printing to closer match the change to red-primary color scheme of the the revision's trade dress.
Of course I'd also leave the 5E14 version available for purchase too, so that customers could choose which one they wanted. Heck... if this was a digital product to purchase and slight editing was not going to be that much of an issue, I might even create versions of the same product that were aimed towards A5E and TotV in addition to versions for 5E14 and 5E24. Might as well aim for specific customers playing specific base games with how you write your cover pages and interior game identification. I think there is something to be said for targeted marketing rather than hoping your singular "One product fits all" product can convince a customer that it will work with whatever base game they are using.
But of course I'm not a publisher, so maybe having multiple versions of the same product just aimed at different customer bases isn't economically viable? I dunno. But I do know that if I was a Tales of the Valiant customer and a particular 3PP said right on its digital cover "for use with Tales of the Valiant", I'd probably be more inclined to get it with a belief that it will work with that game specifically and not require editing/adaptation on my part than some other product that said it was compatible with 5E in general.
It also helps when you know that some of A5e's designers frequent these forums and give you a chance to interact with them.This is true. A5e has its own constellation of 3pp that specifically claims compatibility with that system. It's really been a boon to me, as someone who loves 5e 3pp but not 5.5.