I’ve heard complaints of senior software engineers who, though they do all carry calculators in their pockets and even usually have laptops open in front of them in the meetings, avoid doing math of any kind (simple order of magnitude multiplication, for example) in front of other people. Which makes group decision-making super obtuse.
So, maybe there is something for teachers to do along the lines of let’s get confident and quick at doing this math however you want to do it. I hope things are changing in this direction.