Ok, I see what is going on now.

I had only spotted the edit button, which takes you into the OSM editor and allows you to save each edit.

However there is an I button on the page, which shows the existing tags, some of which may be outdated. For example the name, as in this case.

Brand is a relatively recent tag to be used, traditionally the brand has been in the name tag. This really should be reviewed for each edit. Chances are there is an a name visible which can be updated.

Simply looking at brand is not the best thought out task.

Cheers Phil