Unfortunately, a much smaller group demonstrate the opposite.
As you admit, it is a much smaller group than the masses and masses of Yidden who can and do drink responsibly and become shikur on Purim per our Mesorah.
The much smaller group can’t change the Mesorah of others with their irresponsible behavior. They need to control and refine their behavior. And if that means refrain from drinking too much due to their inability to restrain themselves from taking matters to far, then they have to do what it takes for themselves. Nevertheless, this much smaller groups issue will not interrupt the much larger masses of Klal Yisroel from practicing their Mesorah as their Zeida’s practiced it for 1,000’s of years on Purim, and is codified in our Seforim HaKedoshim.