I think this is a question of who you're talking to, and is something you have to evaluate on a case-by-case basis.
If the person/people you're speaking with, already followed this public figure, or was forced by society to be aware of the life of this public figure at all times — and so were surely also aware of the bad turn that person's career/life took — then to your audience, the ugliness would have already been long acknowledged. To your audience, the ugliness may be the only thing anyone has spoken about in reference to the public figure for a long time.
And, for an audience who became aware of the public figure a bit later on in their lives, the bad stuff might be all they know about them! (Honestly, there are more than a few celebrities that I personally know only as a subject of ongoing public resentment, with no understanding of what made them a celebrity in the first place.)
In both of these cases, if this is your audience, then there's no point to carrying on the "this is a bad person" reminders during the (usually very short!) mourning period that a public figure gets. They already know.
On the other hand, if you presume someone who has no idea who a certain person is, and who is only hearing about them in the context of their death — then yes, sure, remind away.
I think, given the audience of "people in a comment thread on Hacker News about the death of Scott Adams", people here are likely extremely aware of who Scott Adams is.
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That said, on another note, I have a personal philosophy around "celebrations of life", that I formed after deciding how to respond to the death of my own father, himself a very complicated man.
People generally take the period immediately after someone's death as a chance to put any kind of ongoing negative feelings toward someone on pause for just a moment, to celebrate whatever positive contributions a person made, and extract whatever positive lessons can be learned from those contributions.
Note that the dead have no way of benefitting from this. They're dead!
If you pay close attention, most of a community does after the death of one of its members, or a society does after the death of a public figure... isn't really a veneration; there is no respect or face given. Rather, what we're doing with our words, is something very much like what the deceased's family are doing with their hands: digging through the estate of the deceased to find things of value to keep, while discarding the rest. Finding the pearls amongst the mud, washing them off, and taking them home.
Certainly, sometimes the only pearl that can be found is a lesson about the kind of person you should strive not to be. But often, there's at least something useful you can take from someone's life — something society doesn't deserve to lose grasp of, just because it was made by or associated with someone we had become soured on.
I think it's important to note that if we don't manage to agree to a specific moment to all mutually be okay with doing this "examination of the positive products of this person's life" — which especially implies "staying temporarily silent about the person's shortcomings so as to make space for that examination"... then that moment can never happen. And that's what leads to a great cultural loss of those things that, due to their association with the person, were gradually becoming forgotten.
Nobody (save for perhaps a few devoutly religious people) argues that you should never speak ill of the dead. People really just want that one moment — perhaps a week or two long? — to calmly dredge up and leaf through the deceased's legacy like it's a discount bin at a record store, without having to defend themselves at each step of that process from constant accusations that they're "celebrating a bad person."
And it is our current societal policy that "right after you die" is when people should be allowed that one moment.
Feel free to call out Adams' bigotry a week from now! The story will still be fresh on people's minds even then.
But by giving them a moment first, people will be able to find the space to finally feel it's safe to reminisce about how e.g. they have a fond memory of being gifted a page-a-day Dilbert calendar by their uncle — fundamentally a story about how that helped them to understand and bond with their uncle, not a story about Adams — which wouldn't normally be able to be aired, because it would nevertheless summon someone to remind everyone that the author is a bigot.