Because a proposal arrives looking obviously sensible. It names a repetitive task and offers to remove it, and the temptation is to approve on the description alone.
But some repetition exists for a reason, and automating a step where a person was quietly checking something is how errors start propagating silently.
Open the instances it observed. Are they genuinely the same case, or has it grouped superficially similar things?
Ask what the person was doing besides the mechanical step. If they were also glancing at something, automating removes the glance too, and nobody will notice for months.
Whoever owns the process, not whoever owns the tool.
Yes, on a date set at approval.
Yes, immediately, and its history is kept.
Half an hour with your own data usually saves reading three of these. The guides will still be here afterwards.