By going after the regime I don't mean ground invasion but anything that helps reduce their abilities. Afghanistan would definitely be a bigger problem today if the USA let it play out.
This is such a weird take. Huge amounts of refugees displaced from Afghanistan, a US pullout that left their allies in the country to their own devices. 20+ years of funding drug lords and war lords, doling out wads of cash. It went nowhere. The US made no real efforts to fix afghan infrastructure or any real problems the country was facing. The taliban beat the biggest military force in the world with very small means. Read up on the relationship between the mujahideen, Carter&reagan admins and the Soviet afghan war.