It's the same phenomenon as when you learn a new vocabulary word you see it everywhere.

People heard "Claude is nerfed" and now they see it everywhere, they notice failures a lot more than they would have otherwise.

Doesn't matter that Claude is not, in fact, nerfed. Perception is powerful and most humans are not rational.

This account is an LLM-hype peddler, shilling for Anthropic (check comment history). If they say that Claude is not nerfed, then most likely it is, in fact, nerfed.

Oh Opus is nerfed sure, but not that hard. Early this year opus 4.6 can understand your prompt and your intention easily, it got worse around mid April. Opus 4.7 even worse than that.

However that's just it, you just need to improve and make clearer of your prompt and it will perform just as good.