Why is the current location of Hot Jupiters inconsistent with standard gas giant formation models?

Stellar heat would have driven away the necessary gas envelope before the planet reached Jovian size

The core dilemma surrounding Hot Jupiters stems from the established model for gas giant formation, which posits that these massive worlds accrue their bulk far from the star, beyond the 'ice line.' This distant location allows volatiles like water, methane, and ammonia to freeze, providing abundant solid material to build a large core (roughly ten times Earth's mass). Once this core is sufficiently massive, it rapidly captures the surrounding hydrogen and helium gas. If a planet the size of Jupiter attempted to form in the hot, inner regions where Hot Jupiters now reside, the intense stellar heat would have vaporized and driven away the necessary gaseous components long before the planet could accumulate enough mass to become a true gas giant. Thus, their presence in these hot zones is a fundamental violation of standard accretion expectations, necessitating a relocation event.