When leaders say that Lean/continuous improvement/kaizen is "too hard", I'm reminded of the last days of the Roman Empire.
The so-called nobles were no longer capable or willing to fight.
So they hired mercenaries to do their fighting for them.
"Our shields and swords are too heavy..."
The mercenaries, of course, soon turned on them and Rome's splendid civilization collapsed.
Much of the world into chaos & despair. People lived like dogs for centuries.
Nowadays, some 'leaders' outsource thinking to the 'big consulting houses'.
Some of these, a cynic would say, are also treacherous, if not barbaric.
(For examples, do a Google search on 'Gupta scandal'.)
Kaizen is hard, but not as hard as the alternative.