Yes, and of course many safety decisions aren't completely black and white, but overwhelmingly in favour of one course of action over another. If you consider seatbelts, there are crashes where the seatbelt was a contributory factor in the fatality. But, if we look at the data, the chances of a seatbelt saving you in a crash are orders of magnitude more likely than harming you.
There's a term, which I can't recall just now, for our cognitive bias that overrates the significance of positive action (a thing we do) and underrates the risk of negative action (a thing we don't). We need to bear in mind that we're making choices between options - and "do nothing" is an option with consequences like any other.
I have a lot of sympathy for pregnant women, as they're so bombarded by different views on what's good for their baby, or not. But the fact is that around 20% of our severe covid cases are unvaccinated pregnant women. And when mum gets critically ill, that is really not good for baby. This is why it's so important for people to get the best possible information.