I'm not sure how the comments changed if they did, but I do know you are viewing them from an interface and not the blockchain.

I think that part is really confusing for some. we can edit what the viewer sees, but the blockchain records it. So, if I make this comment and edit it...

You would have to look at the blockchain to see it.

It's confusing. I didn't get it for a long time, there are still parts of it I don't get.

Mostly though now I can tell what is in the blockchain and what is being displayed on a front end.