Why do some alerts give you option to view logs for that alert while others do not?

[timogoosen]

 Why do some alerts created from log based metrics allow you to click on the alert and then "View Logs",   see screenshot below of such and example:

While some alerts don't allow you to view the logs  and then you end up having to find the log based metric used in the alert and need to lookup that log based metric and under log based metrics need to click on "View Logs".

See screenshot where there is no option for "View Logs"?

I've never understood why is this. Most of my alerts created from log based metrics are created in the same way.