It is like in ones non-online life, generally avoid anything that comes as gossip or hearsay information and avoid the old bore down the road wh has the answer to everything.
In other word be wary of any information that comes to you through social media, especially where the subject you seek information on is contentious, whether that is on vaccinations or how to boil an egg.
My husband, a few years ago wrote a little bit on his website about a rare wood. Nothing much, just about it’s use by Chinese Emperors. Obviously no-one else has written anything so an internet search brings up his name and he is considered the expert much to his bemusement.
In which case he is currently the expert, because he is the only person who has done some research on this subject and it is the only information available. However, if for some reason this information held political or national implications, for example, it shed doubt on the quality of Chinese workmanship and the Chinese government, in its present mood, got all shirty about it, then one might look at his article with a bit of doubt and ask for more evidence.