You have a pretty loose definition of talking point. It was pretty widely televised that McCain broke ranks with the party to prevent an ACA repeal [1] but ignoring that event there were many attempts over the course of 7 months [2] to replace it. That time could've been invested into literally anything else.

But yeah a lot of things end up being campaign talking points. Like Obama saying they'd enshrine abortion rights into law and uh didn't.

[1]: https://www.npr.org/2017/07/27/539907467/senate-careens-towa...

[2]: https://ballotpedia.org/Timeline_of_ACA_repeal_and_replace_e...