It seems text-decoration: line-through isn't great for accessibility, some screen readers will still read it out.

Scenario 3 at https://www.webaxe.org/strikethrough-html-accessibility/ is one workaround -- also add a visually-hidden class with some extra explanatory text, and I think we'd also need some relevant CSS to go along with the class and actually visually hide it.

Or scenario 4, but there's some gotchas mentioned there too.

It might be better to rewrite/revise the text instead?