The work that made your partners is going
Machines now do much of the first-year work, the reconciling, the checking, the first drafts and the research, so firms are taking on fewer graduates.
The first ripple
That first-year work was where people learned the job. The young accountant who reconciled the wrong ledger and had to explain why learned something no course could teach them.
The ripple after it
The teaching goes with it, and because middle management is thinning at the same time, a lot of the people who did the teaching go too. Nobody feels it in 2027, and my best read is that it shows up around 2031 or 2032, as seniors with thinner judgement and a succession gap nobody can trace back to a decision.
Your immediate future
I'd add a column to your list of tasks that asks whether each one teaches somebody something, and then keep one of those tasks with a person on purpose, by putting a junior alongside a senior on real client work.
I wrote about this in We Didn't Just Automate the Jobs. We Removed the Years. (June 2026) and Where Does a Business Learn Now? (October 2026).