The Psalmist suggests that self-satisfied people are not to be imitated or admired. Following those shepherds leads to a dead end. Literally.
13 Such is the fate of the foolhardy,
the end of those who are pleased with their lot.14 Like sheep they are appointed for Sheol;
Death shall be their shepherd;
straight to the grave they descend,
and their form shall waste away;
Sheol shall be their home.
15 But God will ransom my soul from the power of Sheol,
for he will receive me. (NRSV)
A contrast to the much-loved and consoling 23rd Psalm.
The question for any of us in the modern age: Are we satisfied with ourselves? The suggestion would seem we each are always in need of reform, repentance, and renewal. The Christian interpretation of this psalm would suggest Jesus is the rescue from false shepherding.