Yep, I fully agree. At the tail end of Sarek's life we learn he loved Spock. He doesn't tell or show Spock ever, which would qualify him as a terrible parent by human standards but he's a Vulcan so maybe that's not how he should be judged. What Sarek also doesn't do is end his feud with Spock which I think is a perfectly good standard on which to judge a Vulcan parent. So while I love Sarek as a character he's a bad dad.
Rom inspired his son to enter into a very successful career, just probably not in the way he would have liked. Then Nog inspired Rom to change career tracks and become a station engineer, so I guess it all worked out.
The Ferengi culture being what it is/was really elevates Rom's parenting to s-tier.
Pretty much as soon as he realized things could be different and he could break the cycle he does.
And Nog for sure gets the 'Best Son' award. Nog getting Rom to become an engineer lets him shine so bright he gets Leeta which leads him to becoming a Grand Nagus who is willing to try and make the Ferengi a better people.
He tried, but he kinda failed and never went out of his way to make up for it despite having multiple opportunities. Not a bad person, just a bad father.
He's not entirely terrible in the episodes where his son appears. But Worf has been in around a dozen seasons of Star Trek (TNG, DS9, TNG Movies), and his son has been in like 3 episodes.
There's reasonable TV production reasons for this, but it's one of those oversights that feels really glaring on a second watch through.
So mathematically, Worf is the worst absent father imaginable.
At one point, Worf dumps Alexander with Worf’s adopted human parents because he feels like he can’t take care of Alexander (with the stimulus being his struggle to handle his son’s misbehavior at school), and Alexander has a really difficult time.
His relationship with Alexander was about what you would expect when you just find out you even had a kid and then your partner dies right in front of the two of you before you've had the slightest chance to bond, as well as the challenges of being an Autistic dad to a child with ADHD. 🤷♂️