Sure it's dangerous. Just as making a mistake in a corner and going into a wall. Or something breaking on the car, like the brakes failing. Or hitting the curb in a bad angle. There are hundreds if not thousands of things that can go wrong, at any one point. Tires, for obvious reasons, are more suspect to failure than others. Yes, it's not ideal if the integrity of a tire fails on multiple cars, but you could equally blame teams for not wanting the 2020 tires which - again - were designed to be more durable and stronger.
Teams will always run as close as to the limit as they can, as every tenth could make the difference between winning or losing. This includes running a tire for much longer than it was intended. It's the name of the game and Mercedes, as were others, were fully aware of the risk they were taking when running on these tires for the number of laps they did.
Unfortunately I can't get a direct quote, but on Channel 4, in an interview with Binotto, he confirmed they were not surprised with the tire failures and had instructed their drivers to take extra care with lifting through the fastest corners in order to subject the tires to less strain.
Not for nothing, Rosberg's Championship is the only thing that lends credibility to Hamilton's recent success. Otherwise, he'd just be the guy who's had the best car. — bhall II