We can make all transportation safe. No trucks on the highway if raining or icy. No ships on the sea unless seas are below 6 ft swells and visibility at least 3 miles.
When we get done with the other sectors of transportation shutting down everything not operating under ideal conditions we can require all approaches must be ILS's, no speed restrictions on final. All landings must be autoland because some pilots have trouble hand flying and God forbid no crosswind landings over 10 knots because some pilots can't do that either.
Or we can require competent operators that can handle less than ideal conditions safely because they are qualified to do so. If you can't handle it you can't be allowed to operate until you can. I thought we already operated this way however with check rides, line checks, etc.