The people at Deloitte are not generally dumb unmotivated people. They are ruthless $$ chasers and if AI is allowed they will use it to check the boxes and move onto the next paycheck.
Many of these people will effectively have their life ruined. Many will likely take their own life. Its not just harmless paperwork fudging when it results in men with guns being dispatched.
You end up consulting at Deloitte when you can't get into MBB, any of the smaller boutique firms, strategy at big corporations etc. Accountants are an exception but they're only there to pad their resume before exiting to corporate in-house finance roles that lead to CFO positions.
Deloitte is to outsourced business consulting what Infosys is to outsourced software development.
MBB still has an edge for general management consulting, but I see demand dwindling, despite the annual occurrence of a middle eastern sovereign wealth fund paying $100M for a study to build a wind powered ice skating rink on top of a helicopter pad.
Dumb and highly motivated, then?