Hello,
Your product title appears repeatedly because it is used in several places automatically.
For each product image WooCommerce generates:
Attribute Example:
alt Chinese Song Dynasty Hanfu Dress with Beautiful Lotus Pattern
title Chinese Song Dynasty Hanfu Dress with Beautiful Lotus Pattern
data-caption Chinese Song Dynasty Hanfu Dress with Beautiful Lotus Pattern
data-large_image_title Chinese Song Dynasty Hanfu Dress with Beautiful Lotus Pattern
Then the gallery script converts all of that into JSON, which is why you see many copies inside one long line.
If you have:
6 product images, each image stores 4–6 attributes
You easily get 30+ repeated titles in one line: https://postimg.cc/jW0fcd87
This is normal for WooCommerce galleries.
Google ignores:
data-* attributes
JSON used for gallery scripts
repeated alt values inside scripts
Google only cares about:
page <title>
<h1>
visible text
structured data
So this will not cause keyword stuffing penalties.
Best Regards,