It's definitely Worf. I don't think it's fair to say Worf tried. How many episodes was Alexander even in? As a viewer I only saw him try like 3 episodes or something and give up. You can try and explain how a lot of shit happens in their world we don't see, that the time between episodes represents weeks or years, but as a viewer I just get those few interactions and then he's gone.
And Worf also did that stupid rite to take that other kid as a brother and we never see that kid again either.
Worf went to
counselling to try and have a better working relationship with his son. If he was a human, he'd be the type of man to not want to talk about his feelings. As a Klingon who is constantly surrounded by 24th century humans and their open willingness to talk about their feelings and everything else he finds embarrassing about them and all of humanity, that had to be hard for him. Yet he was more than reasonable about trying to work things through fairly for both of them. There are human men who would never even try. I know from experience. My father point blank refused to go to any type of counselling because he knew he'd be told he was wrong. Decades later he's paid for that decision.
That Worf tried at all tells me he really did love his son and wanted things to work out between them. Also, we really shouldn't look on that rite as a measure of Worf as a parent just because the writers were never interested enough to revisit what that meant, nor the studio willing enough to pay the original writers for the use of their character.
You should rewatch Sons and Daughters. Worf goes years without even speaking to Alexander for no other reason than working on their relationship was too much effort and it was easier to just not and let it slide rather than confront the issue. Should have picked up a subspace phone once in a while.
It's been a while since I watched either TNG or DS9, true. But I still find people voting for Worf ridiculous. Dukat planned on murdering his daughter himself because her existence was politically damaging to him. Worf trying and failing as a father, yet still loving his son and wanting the best for him does not at all compare. It's utterly absurd to me that people are viewing Worf - as an imperfect man and a self-admitted failure of a parent - as
worse than Dukat, Tain or Hansen who thought bringing his young child with him on a study of the most deadly adversary in the galaxy was a good idea, or any other horrible parent we may find in Star Trek.
It's absolutely perfect ResetEra though, I'll give you that.