Heresy? ‘Heretic’? Really?

I have long believed that significant care must be taken when using the word ‘heresy’.

History Professor Michael Haykin

It is causally thrown around with, it appears to me, little reflection on the implications of its assignation. If I say someone is teaching heresy, then I am calling that person a heretic. And heresy is a damnable sin (see 2 Peter 2:1; cf. 1 Timothy 4:1-5).