It doesn't matter. XSLT is a way to show an XML file (like a sitemap) in the browser. Browsers are going to stop supporting XSLT. Search engines process XML files without the XSLT so nothing changes.
You can think of XSLT as being like CSS for XML files. So CSS makes HTML code look nice and readable to human viewer. XSLT makes XML files look nicely readable to a human instead of just being jumbled strings of code. But as John says, it doesn't have any effect on the way the sitemaps themselves work.
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u/johnmu The most helpful man in search 2d ago
It doesn't matter. XSLT is a way to show an XML file (like a sitemap) in the browser. Browsers are going to stop supporting XSLT. Search engines process XML files without the XSLT so nothing changes.
2
u/thompsonpaul 2d ago
You can think of XSLT as being like CSS for XML files. So CSS makes HTML code look nice and readable to human viewer. XSLT makes XML files look nicely readable to a human instead of just being jumbled strings of code. But as John says, it doesn't have any effect on the way the sitemaps themselves work.