I am fairly new to Wikitree and have have found some excellent profiles on the site. I have also found some absolute rubbish, especially on gedcom imports, when the people who made the import appear to have abandoned the site soon as it was done. I can appreciate that importing gedcom files might have given the site a kick start in the early days of wikitree, but I think it is now time to call it a day. We have enough rubbish. Lets concentrate on the good stuff and try to put the bad stuff right, and stop irresponsible imports.
When I first found wikitree I considered importing the 3000 or so people I have in my file via gedcom. It would have been the easy way. I am so glad that I chose not to do so. It is taking considerable effort to feed in my research person by person, but doing so has enabled me to take a fresh look at my research, add to it, and identify errors in my original research. Its time to look at quality rather than quantity.