It's not about displaying the names next to the reviews on GLassdoor.

It's about building an internal database of user profiles with their names. And they are apparently pretty aggressive, getting the names from support cases and third parties:

https://www.glassdoor.co.uk/about/terms/ > "We may update your Profile with information we obtain from third parties. We may also use personal data you provide to us via your resume(s) or our other services."

https://arstechnica.com/tech-policy/2024/03/glassdoor-adding...

The worry is that when they get hacked, it will be possible to map real humans to reviews. Which is potentially going to be catastrophic for anyone who posted negative reviews. Not a good move from a website which is some sort