Is this a good idea to do or not? Since profiles generally don't have any content like a topic would, it would make sense to stop them from being indexed by Google, right?

What do you guys think?

“Good idea” in regards to what goal? 

5 minutes ago, opentype said:

“Good idea” in regards to what goal? 

Preventing thousands of profiles from being indexed with little to nothing with value in them? I'm not very sure, I see it as if Google wouldn't want them..

It’s about what you want, not what Google wants. 

Indexed profiles can certainly generate traffic. But your users might not want to show up in Google searched for their (user-) name. But that depends on your site. 

1 minute ago, opentype said:

It’s about what you want, not what Google wants. 

Indexed profiles can certainly generate traffic. But your users might not want to show up in Google searched for their (user-) name. But that depends on your site. 

I don't really mind if they are indexed. I just see them and think that maybe indexing profiles would hurt the website's SEO. But I could be wrong.

I wouldn’t know why that should hurt ranking. 

4 minutes ago, opentype said:

I wouldn’t know why that should hurt ranking. 

Because profiles typically do not hold "quality" content like a topic would.

And considering we have more members than topics, seems a bit off. 

I don't know