I guess in the strive for efficiency that reliability has taken a hit. The alternate engine has issues too pushing current technology to the limits, the GE90 on the 777 still has regular BUG failures after 25 years, as for the MAX and now A320NEO with their stab AFCS faults, the A350 computer resets every so many days, it all reminds me of working the L1011 Tristar in the 1990's. I am afraid it looks like we are now in an industry relying on backups rather than designing safety and reliability in to the airframes and engines in the first place. I think they call it safety risk assessment.