Jeffrey, you are expressing some of the same frustrations others have in the past.
Yes, you still have to mark every potential match as accepted or rejected. Once you have marked all the potential matches for an individual, the system will automatically mark completed for you. Once you have completed all the the matches for all individuals, you will get "ADD" buttons for any individuals who did not have matches.
I'm so very sorry you did the "refresh." If you do that, you do get more matches. I'm sorry there was not more of a warning on the help page about that. It is best not to "refresh" once you've started.
Many people create profiles with very little data. The people who set the parameters try their best to make it narrow enough so you don't get too many matches but broad enough to catch any potential matches with those profiles which have limited data.
Yes, it can be a tedious process. I tried uploading a GEDCOM and going through the process when I first joined WikiTree. I found that it was not something I wanted to continue to do. I did not feel it saved me any time. I have, since then, added all my profiles manually. Other people like uploading GEDCOMs and are willing to put up with the necessary, but tedious, comparison process and the other clean-up process which comes later.
Whatever you choose to do, best wishes with your WikiTree work!