ChatGPT is pure BS. These extensions have different purposes, but do overlap to some extent. JShelter is primarily for fingerprinting protection. NoScript is for javascript control generally, which can achieve different goals, in total or in part.
Using both of these extensions at the same time is going to complicate usage and lead to problems in web surfing.
Have you explored the JShelter GUI?

Instead of disabling the whole extension, you can toggle one of the GUI switches to see which is the offending feature.
Users need to understand the purpose of an extension and gain familiarity with its GUI and associated features, otherwise they are whistling in the wind and unable to gain relevant experience. This concept also applies to any software, be it browsers or other tools. Users need to understand the purpose of the tool, and be willing to explore, experiment and learn from experience.