I agree it's worrying. Panic to me, though, indicates a loss of your faculties. You still have to be able to assess the situation objectively and adapt accordingly. I guess my point is that hyperbole about climate change (alarmism) is just as unhelpful as climate change denial.
Except that in context nobody, not even the self-proclaimed doomer who wrote the post, is suggesting we all go running around in blind panic with our hair on fire over this. Rather, that it’s severe enough and so far out beyond recorded temperatures that it should be an urgent priority that’s taken extremely seriously.
Claiming this is just panic is devaluing the data and an argument in favour of yet more inaction or slow and ineffective action.