Many people have asked that question, it is a hard complex problem. If the FDA approves a drug and it turns out bad we hate them, if they fail to approve a drug we hate them without knowing if it is worse than nothing.
Those old parts work. Is modern technology better? Sometimes yes, but sometime change for the sake of change is bad (I hate modern bathrooms cause the water never comes on, old manual valves worked)
Generally when the FDA fails to approve a drug nobody outside the industry ever hears about it. It's only in rare cases where you have lethal infections that take a very long time to kill, such as with AIDS, that the FDA faces strong political blowback over non-approvals.
Those old parts work. Is modern technology better? Sometimes yes, but sometime change for the sake of change is bad (I hate modern bathrooms cause the water never comes on, old manual valves worked)