Those already exist, but are understood and provide professional support (in the form of engineers who extend the platform for a customer) (Hybris, CrystalCommerce, phpbb, discourse, etc.)

That engineer probably can’t even be replaced by AI since every new business is a snowflake once the low hanging fruit is gone.

I don’t think our current form of statistical models will ever be able to generalize and get into specifics at the same time.

AI will change how individual engineers work by being a more proactive search engine, but will not be relied on, by engineers, to write code entirely.