I don't see the relevance or connection of that image and him not being trustworthy?
You cannot judge a book by its cover, unless it is a book of album/book covers, then you can judge it by its cover.
It seems to me (although i have had no dealings with this company or the man himself) that he has encountered some serious issue either personal or business related, that has hampered his product and upset his recent batch of customers.
I say recent batch because i know of a few people who have the handle and rave about it and there was not a bad word said about the previous batch.
I know this does not change the shoddy service you have received and i think you personally did the right thing in sending it back and getting a refund...but until the truth comes out, hold off on the smear campaign...he may have a terminal illness or a sick child or he may be incarcerated or he may have been kidnapped....there are 100,000 things that could have happened...or he may just be a dodgy mask wearing schmuck....but you do not know and it is wrong to make assumptions.
There are other options available for charging handles so its not the end of the world.