How about qualifying the many users who are having sync issues? Link?
>> I would be interested in seeing where Mackiev states that about trees needing to be online in order for FTM to work.<<https://support.mackiev.com
You can live chat with mackiev and ask them yourself if you don't have the will to read.
>>My issue isn't privacy, it is accessibility and ownership. Once you upload your tree it is no longer yours, but the property of the owner of the server on which it resides.<<
Can't help you there, it is what it is, and all the whining in the world won't change it. You have the free will to not use the software, or the internet.
If you havet the time, this is a very good review and read : http://genealogytools.com/family-tree-maker-2017-review/