They did drop the anti-gun stance and nobody cared or believed them. Kamala was on stage during the debate telling the crowd that she and her running mate were both proud gun owners. Meanwhile Trump is fairly anti-gun.
You can't expect people's mindsets to change overnight though. Organizations develop a reputation of years, decades, or longer. It might take just as long to change that reputation. It takes consistency over time, not just one or two people getting on stage once and saying "I'm a gun owner."
This is true. But then again Trump was a staunch democrat who lived in a penthouse his whole life. Yet is able to just flip a switch on any topic and a whole voter base eats it up. So it's really hard to know what grounds to criticize them on when the opposition has just pure chaos magic on their side.
You can't expect people's mindsets to change overnight though. Organizations develop a reputation of years, decades, or longer. It might take just as long to change that reputation. It takes consistency over time, not just one or two people getting on stage once and saying "I'm a gun owner."