The way I try to set stuff up is to build on it, in a way? Because different people will "get it" at different times. So like, having subtle stuff early on -- things that readers could miss or not understand, and that you're kind of expecting them to not put together as important. And then later you reinforce that with things that are more obvious (but which many people will still miss) -- if you do a couple of these, some more people will put it together once it's come up a few times. When it's finally stated outright, for the people who were following, it's confirmation -- "Ha, I knew it!" For the people who didn't keep up with the hints, stating it outright becomes a kind of sherlock holmes "and that's how I figured it out" moment. It's satisfying for everyone.
Basically, subtle hints are great because a few will notice, but you have to build it into the story in such a way that it's okay if they're not noticed. Then the next time it comes up, some people will be like "omg I know what this is about because I figured out that hint before!" and feel smart, other people will be like "wait, this was mentioned before, hang on, are these connected??" and start to get it. And that kind of reinforcement is good for the long pacing of webcomics, too.
As a reader, I tend to be the person who doesn't get stuff until it's outright explained.... because that's how I enjoy stories. I like saving all the clues, waiting to see how they connect, and then being excited when they all come together, rather than working it out ahead of time myself. So I don't think it's bad for some readers to be waiting for it all to come together, as long as your story allows for that!
Personally, I'm thinking more in general. A lot the advice here is kind of talking about like... UNCOVERING A MYSTERY or HIDING A SECRET and while I think that's a valuable part of that conversation! that's not quite what I've been pondering. Like....not a big mystery, just a question that's slowly being unraveled by the plot, like "what does the magic ring do?"
If they're going to see the wizard to learn what the magical ring does, and along the way it does something weird, Character B asks "what happened?" and Character A says "maybe the ring is powering up because I'm wearing it?" and then they make it to the wizard 5 chapters later and the wizard says "ah, yes, it turns out this ring is powering up, since you were wearing it" it seems to me like that would feel kinda lame?? like "yeah okay we got that already thanks." But if Character A says "oh no, is the ring breaking??" and you spend the next 5 chapters trying to keep the ring from breaking, then the wizard is like "lol no it's just powering up" that would also be lame???
So that's kinda what I've been thinking about -- not so much "how do you reveal information" but more "when the character eventually does weigh in, how do you handle it?" or "how do you handle letting a character guess correctly without making the question irrelevant?" or "how do you handle letting a character guess incorrectly without confusing audiences or making the answer unsatisfying?" That sort of thing.