Frankly those "I understand that you feel that way but my intention was" statements sound far more like evidence that someone is intentionally patronising and denigrating someone than "sorry, I didn't mean..."

That carries all the problems of acknowledging you're aware of the effects of things you're saying (just as bad from an HR point of view), but simply refusing to care (worse), and it's hard to think of any response to accusations of "mansplaining" that sounds more like "mansplaining" than unapologetically stating it's unfortunate a lady is incorrect to object to your statement...