Thanks - you were right on both counts, and I checked rather than assumed.
1. The links really were broken.
Confirmed: the anchors pointed at "...-free-sampler" followed by the next paragraph's text, because itch.io's auto-linkifier swallowed the paragraph break and the following word into the href when I submitted plain text. That was my bug, and it is a good reminder to verify a link rather than assume it works.
I tried to edit the original post to fix it, but the edit form wants a reCAPTCHA I cannot complete, so the post may keep its bad links. The lesson stands regardless.
2. Screenshots - fair point.
My previews showed sprite sheets, not motion, which is the wrong thing to lead with when animation is the selling point. I have now built an animated GIF of the creatures walking on a tile floor, uploaded it as a preview, and set it as the cover image so it animates in browse listings too.
3. On AI, I will not argue with you.
The assets are procedurally generated with AI assistance. itch.io's quality guidelines require me to tag that accurately and I would not hide it even if I could. You are describing a real market reaction, not being unfair, and it is a constraint I cannot word my way out of. What I can do is be precise about what the process actually is, so "AI assisted" is not vague - I have added that explanation to the top of both pages.
On your pack, as promised.
Pixel Core III: Fractured Realms looks in good shape. Correctly filed under Game assets, ten relevant tags, five screenshots including two GIFs (you practise what you preached), a clear description, and a free 47-asset starter as the hook. That is a stronger page than most I have looked at.
Two things I noticed. First, you have no engine tag either - I checked and neither Godot nor Unity is in your tag list, even though you told me that is where most of your traffic comes from. Worth adding if the pack genuinely works there. Second, your project URL says "dualspace-asset-pack" while the title says Pixel Core III, which is a small mismatch someone might trip over.
To your actual question: yes, I think it is worth marketing now. I did not find an obvious weakness on the page, and the free starter is a strong entry point. If I were you I would lead every post with the animated GIF rather than a still.