My boss says it's "best practice" for workers to write down instructions for their daily tasks. Is that really true? My previous job had no such requirement. To what degree is it normal?

I get how a boss would want a basic outline of what someone does in case they get run over by a truck or something, but my boss wants step by step instructions for how to do things, like "open XWidgetsite.net / log in to your company account / go to tools menu / go to data report menu / download .zxmlx file for current period / then open..."

These are specific skills sets for a specific industry using specific software tools that take training and experience to learn. But he thinks these things can just be reduced to a bulleted list of steps? We're not temp workers or something, we're business professionals with degrees for the jobs we do. I feel a little insulted. Esp. because...

A lot of people got let go at my company last year during the pandemic. Not my boss' choice apparently, but upper management's. So now I do 3½ people's jobs. My boss actually complained to me that one of the workers who was let go didn't leave instructions that were good enough for him. I pointed out that this person had been fired without warning and that I wouldn't expect her to be motivated to write anything better, but he just said that he'd wanted her to write these instructions all along even before the pandemic. (o rly? I've been here 2 years and he never asked me to do it before) Why? So that she'd be even more convenient to discard?

So yeah, I'm not really interested in writing down much of anything about my job, and I'm making my instructions as vague as I possibly can (I'm keeping my feelings to myself of course). Or do I just have a bad attitude?