I had to refresh my own memory by looking it up. The Lansweeper report basically just checks whether the BHO is added to the list of approved ones in software authorization. This means it is up to the user to decide whether they are valid or not.
But it does indeed seem odd to have an apostrophe at the end. Maybe at some point edited the name and missed his enter key or something.
Also, people on the internet can get defensive really quickly, there is no point in arguing that he should have read your question properly, usually they don't change their mind anyway