Bonus Question answer - Trees are people too! Maybe they are just having a bad day!
I would not pull a tap just to tap a different tree. Make sure you tapped correctly, didn't pound the taps in too hard, got nice clean wood when you drilled, picked healthy looking trees. The only reason you might want to move the tap (take it off one tree and put it on another) is if you didn't do a good job tapping, or only have X number of taps and you don't want to buy anymore at the moment.
2017 - 20ish taps on buckets, boiling outside in two baking pans
2018 - 70+ taps, 14-buckets, 50+ on tubing, homemade arch from oil tank in my barn, 17 gal syrup
2019 - same set up, 20 gal syrup
2020 - less taps, short season, but RO kit was fantastic! 6 gal syrup and a maple cat!
2021/22/23 - expanded into the neighbors yards! 50 taps on buckets and 40 taps on tubing