For an opposing view, there's this
While admittedly I'm viewing this from a great (and safe) distance away, it doesn't seem to me particularly convincing.
From what I read and see over here, Trump doesn't seem particularly concerned about winning people over. Rather, this whole electoral strategy is to concentrate on encouraging his base to turn out and vote, while trying to give people reasons not to vote for Kamala Harris, and hope that this, combined with the efforts of his supporters in various state legislatures and the federal courts, will deliver victory.
The idea that this is a cynical attempt to persuade voters not to be deterred by her husband's record on abortion seems fanciful -- how many people who would not otherwise have voted for Trump are likely to be persuaded so to do (or, at least, not to vote for Harris) by learning his wife is pro-choice? Vanishingly few, I'd suspect, and they'll probably be equalled, if not outnumbered, by those single-issue anti-abortion voters who would otherwise have voted for him but are dissuaded from so doing because they disagree with her.