And you can google what the manufacture has to say about this, too. Excerpt (emphasis BikeFriday's):

"In addition, we have found that the issue is not isolated to older or heavily used tikits...As a result, we continue to strongly recommend that you so not ride your Bike Friday tikit...No matter what the outcome of your inspection, we continue to recommend that you do not ride your tikit...Again, at this point, Bike Friday strongly recommends that you do not ride your tikit...Because of that, we continue to strongly recommend that you do not ride your Bike Friday tikit no matter what results you might have found in personally inspecting your bike. We just don't know the reliability of the stems we produced. You are at risk if you ride your tikit...
REGARDLESS OF THE OUTCOME OF YOUR INSPECTION, WE STILL RECOMMEND YOU DO NOT RIDE YOUR tikit."

If some guy on the internet calls a decision to suspend riding a tikit "going Chicken Little", I'm actually okay with that.