Based on my experience managing advertisements these past few days,

the fundamental reason for the flood of ads on platform X is simply because they don't want to manage it,
if you just grok and read the poster's avatar, name, and combine it with their comments,
you can block 99% of the current spam ads,
then just dynamically upgrade from there,
before AI existed, it was said to be unmanageable,
but even with AI, it's still so stupid,
there's only one reason: they don't care.