They were, always, enjoyable, Matt and Elektra, and while not healthy they were magnetic in a quite literal way: opposites to some degree that attracted one another.

Absolutely. As opposed to the Karen/Matt relationship where I was never quite sure whether the show writers wanted me to see it as the trainwreck I did (especially when they gave Frank Castle his agony aunt speech), but hope they did given the way it fizzles and ends early in the season, with the Matt/Elektra relationship I felt I was on the same page with the narrative. It wasn't meant to be remotely healthy, but it was meant to be strong and as you say magnetic. The scene which sold me on them being intimate not just in the sexual sense was when they were both nearly nude on the couch, post fight, without either of them making a pass, and yet it felt for more emotional (and frankly, hot) than their college era sex scene had done). And as much as I spent much of the season angry at Matt, his "what if I run with you" speech was one of the most moving love declarations MCU has offered me to date, and Elodie Yun's expression also sold me on Elektra feeling just as strongly. (Without the show pretending it would be good for them if they did this.)