You want a spiritual successor? We have Ghost.

You want anything beyond ghost? Find a way to port the vast market of 100,000+ cheap and free themes and components that are available to enable tech-illiterate, low-budget users to basically build an entire business platform on a $5/mo shared hosting plan.

A vibe coded CMS that's 3 months in the making is not capable of taking that place in the market, no matter how much VC funding you put behind it.