Ok, but how is an anon user supposed to make sure that the URL is targeting the correct post? If they can see post 25 in a topic, there is every chance that the URL could be pointing to post 23, or even - if posts are short and monitors big - post 21. Then they are using a URL for the wrong post. The share button removes the ambiguity and makes it clear what they are linking to.
What do you mean by “on the topic”?
- Do you mean on the first post? What good does that do the anon user if they want to share post 30?
- Do you mean in the header bar? That would be kind of weird, and anon users wouldn’t really know what behavior to expect, but at least it’s always visible.
- Do you mean the share button at the bottom of the topic? Then what if anon wants to share post 23 of 64?