From @Dyolf77_WMF (Arabic Wikipedia):

[Spme mentors] want to have some "ready" answers and when a newcomer is asking a question which the topic is repetitive , they want to pick a reply from a tool, modify it and send it quickly to newcomer's question.

From @Urbanecm_WMF (Czech Wikipedia):

Some users don’t wish to enroll as a mentor, because they “see a bunch of repetitive questions” and no “promising newcomers”;

See also T270523: FAQ before asking questions, which describes a possible solution for this issue.

We need to find ways to reduce this burden.