0DTE SPX CSPs at very low delta

Let's say on a daily basis you wait until a few hours before market close, and open a single SPX 0DTE CSP at something like 0.05 or 0.01 delta. You do this every day trying to yield $50 of profit by expiration. Over a year that is close to $12k. Would your profit be wiped out if a single day had a massive drop during those few hours? Is that likely?