Here in bitcointalk a lot of members attain the Legendary status.
Yes there a lot of them who is a great help to a certain site.
But should we trust them in every thing they say?
There are actually only 301 legendary members, out of roughly 385,000, therefore legendary members make up less then 1% of the population.
No you should not trust what they say or factor in the fact that they are a legendary member when making a determination if they should be trusted.