I don’t really get it. The examples linked from the homepage are _so_ simple (and so similar) they might as well just be built with one or two templates and a WYSIWYG editor. I don’t get why they need to be vibe-coded at all.
Although maybe the issue is just that you haven’t picked the best examples? The one you linked in a comment with the raining emojis is a way better example that shows the flexibility (and the fun!) of this, I think.
Either way, I’d go with https://mmm.page as an easy and fun page builder before this, but maybe that’s just my own prejudice against vibe coding.