With the latest change, I think that turning off all clerk jobs will still be the "correct" choice, but not doing so now will be far less damaging to the AI and players that don't know better.
A side benefit of turning off clerks is it makes it easier to manage the whole S-curve growth without thinking about it too hard. In general, you are better off if pops are moved from your more populated worlds to your less populated ones. Turning off clerk jobs provides an organic way of doing this w/o the micro of looking up planet capacity and current growth bonuses on each planet. I still think it's worth turning off clerks for this reason alone.
I now prefer removing clerks entirely and reworking all commercial zones to provide a smaller number of merchant jobs (should probably also look at housing). This is more in line with an overall reduction of the amount of pops and the size of the economy.
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