I never had a butterfly keyboard failure on my 15" MacBook Pro Retina (first year model). I just never liked the feel of the keyboard, the noise that it made when I typed, and the inverted T cursor keys. I upgraded to the 16" MacBook Pro and the keyboard is a joy to use.
ARQ is amazing. I switched to ARQ from CrashPlan and ARQ is significantly more reliable and faster. If you own Office365, you already have free cloud storage that works great with ARQ.