These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
I Am Not Shazam: The title character is (legally) named "Hedda Tesman", not Hedda Gabler. Gabler was her maiden name, and it serves as a symbol of her pre-marriage identity.
Magnificent Bastard: Hedda, who's incredibly beautiful, and manipulates every single person in the play without them realising, except for Brack who understands what Hedda's doing straight away, mostly because they are very similar.
Moral Event Horizon: Hedda loses much of the reader's sympathy after she pretends to love Tesman. It's also fairly hard to feel sympathy for her suicide because she's just killed her baby.
Actually may not have read like this to the audience of the time- foetal rights was not really a debate that was going on, in the modern sense. Pregnant suicides were surprisingly common and usually were sympathetic in fiction (though admittedly Hedda is hardly typical of the case. See An Inspector Calls for how this was treated at the time
What an Idiot: Tesman; At the end of the play, instead of helping his wife who's just shot herself or going to check on her, he simply stands in one spot and wails.