Obviously you can't please everyone. So no matter what type of skip the line system they use, not everyone will like it, BUT,
Genie+ seems to have missed the mark for most people.
We used it one day at HS the week before Christmas (so busy), and we went back later that week (so busier) without it and we did about the same amount of attractions, but the
second day was much less stressful and we weren't constantly glued to our phones trying to get the next best LL. We also were more relaxed with our touring, stopping to shop, watch a show, get a drink etc. With
Genie+ we were on a strict schedule to get something done before our next LL, or we spent time sitting on a bench waiting for the LL time as we didn't want to walk away only to walk back.
I also noticed more guests and CM unhappy or disgruntled than ever before. WDW is a place to go and be happy, to escape the stresses of everyday life. I hope TPTB find their way back to that.
Sadly, it will have to get worse before it will get better. When people start complaining with their dollars spent elsewhere.
As DVC we are using our points and not going to the parks, spending time at the pools instead of shopping and eating in the parks etc. I have faith that it will get better, it will just take some time.