Actually, predicted by Svante Arrhenius in 1896.
In which way were they wrong? The amount of global warming is still debated because we haven't determined all of the carbon sources and sinks, but there always been a consensus about the direction of warming, even during the 1970's by your own citation. The broad picture of global warming is well understood- it is driven by the laws of thermodynamics (you agree those work, since you drive a car), the laws of light adsorption and reflections (you know those work, since I assume you use a camera, as this is a photography forum). The amount of warming is under discussion, but the range narrows as we learn more.
In this pandemic, the range of estimates is due to having to make the best estimates of how many people are sick, how many were exposed, and a number of other factors. In the USA, despite a 6 week warning, we still can't do the testing properly partly because the CDC created tests that didn't work (cited many times in this thread). The media is also confusing the information, as I just cited in my earlier reply to you. You should try looking at other sources of information than the ones you do.
I'm not sure if they can say how much from vehicles/industry but it is happening and not just from those sources. Some is natural. Been a while since I looked into it. What is the difference if they are 50 or 100 years out? They discovered it in the 30 or 40's (can't remember) by accident using a simple experiment that a 7th grader could replicate in a high school science class. Co2 traps heat and they said back then if you add it to the atmosphere the global temperature would increase. The climb in PPM is there and anyone can measure it with the proper equipment. Maybe we only added half the amount but we still did. It adds up. The earth has been cooled and heated forever and as always will do fine by adjusting itself. I believe will be different for us because it is happening too quickly for us to adjust.