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Microsoft is killing WordPad in Windows after 28 years
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
It's have to actually launch it to be sure, but I'm pretty sure you can open them in Edge these days, along with all the other office documents.
As for creating documents, your average social media comment editor has more features than Wordpad. Given that Chrome is still the most popular browser on Windows by some way, I think the average Windows user can download programs just fine. OpenOffice is even on the MS Store for those stuck on Windows S edition.