I've got this comment from Jan Beyer, Community Operations Manager for the LEGO Group:
Regarding the website - it should not be called LEGO Answers - this imply that the LEGO Group answers but perhaps "Answers regarding LEGO bricks".
Now I have to admit I can't really find the part of the site which says "LEGO Answers", as everywhere I look I see "LEGO® — Stack Exchange" which may be OK; but if it does exist, can it be changed somehow?
Edit to add:
The site still has
<title>LEGO® - Stack Exchange</title>, and so appears as "LEGO® - Stack Exchange" in Google results, and the mobile site also still has the main page heading as "LEGO®"
LEGO Legal Affairs reviewed LEGO Answers and did not cite any problems with the name. They made a few suggestions about improving the site description to bring it into compliance. So, unless we hear otherwise, the site name does not need to be changed.