I’d certainly agree with you on that example.
After a few uncomfortable moments with new shooters, one of the IDPA clubs I SO for introduced a “holster and safety certification” for shooters new to the club. I haven’t participated in teaching it, but it seems to be a short new-shooters class conducted immediately before the match. It’s mostly an opportunity to convey safety expectations to the new folks, and give them a chance to demonstrate that they understand them before “going hot” in their first match. The MD then ensures that the SO running their squad is aware who is new. They then get a little extra instruction and vigilance throughout the match. It seems to work pretty well.