A dynamic this addresses is the fact that there will soon be 65 year old captains at the regional airlines. At least requiring an ATP will increase the possibility of getting it down when the 65 yr. old CA becomes incapacitated. Odds are much improved over a 190 hour FO with ZERO jet time, ZERO actual time on his 1st OE leg at night, in the weather flying a CRJ single pilot from the right seat.
Don't say it couldn't happen. If you asked me last year I would have thought it was not possible a 121 CA would have so little SA he would hold the yoke back pitching up over 30 deg NH on final, ignore the airspeed indicator, stick shaker, stick pusher, rudder dance stop to stop, and enter a spin at the FAF.
With all due respect, thanks Marvin you have opened my eyes to the fact that nothing is impossible.