I didn't listen to the podcast but that list is only telling you if something is or is not carcinogenic, but not the magnitude of the effect, or if you should avoid it or not.

For example, a substance that for sure, increases your odds of getting cancer by a one in a million will be ranked at the highest level, while a substance that may increase your odds by 50% will just be "possibly carcinogenic". There are some carcinogens that are unavoidable, and in fact shouldn't be avoided, like sunlight.

It is a useful list, but when presented as a list of how bad things are, it is misleading.

It's worth listening, it's 53 minutes at 1x speed.

The main gist is that the list doesn't specify volume and the low quality of the data due to confounders. Also, conflicting studies.

Examples of things that will "probably" or "possibly" cause cancer:

Night shifts

Aloe vera

Talc

How many night shifts, and what is the risk increase? If you do 1 night shift will it double your chances of catching cancer, or will doing night shifts every day for 40 years increase your risk from 1 in 10 million to 1 in 9 million?

The list doesn't specify any further information.