To the true believers, there was a time in the past that we were in for an ice age.
Indeed, if it weren’t for anthropogenic global warming, we would still be in for an ice age, maybe within 5,000 to 50,000 years. If we ever get to that point, we can do something about it then, probably pretty easily using some CFCs.
The physics of that has not been disputed or overturned; the question then was which influences would likely be stronger in the short term. Now, after significant effort and experimentation, we now know.
Summary: mainstream science was right then (which did certainly NOT predict an ice age within 100 years with any certainty!!), and still is.