Do front CV axles need replacement or not?

A few days ago, I had a pre-purchase inspection done by a Toyota dealership on my car. They mentioned that the battery failed the performance test and identified seepage from the front axles, recommending replacement for both the battery and axles.

However, I later had the battery tested by Canadian Tire, which confirmed that it is in good condition with an average remaining life of 51 months. Additionally, a certified mechanic inspected the axles and found no signs of leakage, cracks, or any other damage, stating that the axles are in good condition.

I would appreciate a second opinion on the axles, as the potential buyer is concerned and insists on knowing why the dealership recommended replacement.