Gemini is very paranoid in its reasoning chain, that I can say for sure. That's a direct consequence of the nature of its training. However the reasoning chain is not entirely in human language.

None of the studies of this kind are valid unless backed by mechinterp, and even then interpreting transformer hidden states as human emotions is pretty dubious as there's no objective reference point. Labeling this state as that emotion doesn't mean the shoggoth really feels that way. It's just too alien and incompatible with our state, even with a huge smiley face on top.