People have all sorts of reasons for wanting legalization beyond disempowering drug cartels.
Like keeping people out of prison for nonviolent crimes, building a culture of rehab over penalization, and creating legitimate drug markets instead of dangerous black markets, off the top of my head, that have nothing to do with whether cartels having other lucrative enterprises beyond drugs.
The parent appeared to be suggesting that legalizing drugs would not solve the cartel problem, because the cartels have already displayed a willingness to engage in different forms of harmful activity. The argument wasn't "legalization is bad", but rather "legalization won't solve this specific problem".
People have all sorts of reasons for wanting legalization beyond disempowering drug cartels.
Like keeping people out of prison for nonviolent crimes, building a culture of rehab over penalization, and creating legitimate drug markets instead of dangerous black markets, off the top of my head, that have nothing to do with whether cartels having other lucrative enterprises beyond drugs.