In a broader sense: We can acknowledge that there's an underlying problem, and how to fix it, while at the same time being willing to advocate a temporary fix until the underlying problem actually is fixed.
Think of it like polyfill: The underlying problem is that old browsers exist, but we can't boil the ocean and make everyone upgrade, so we use polyfills to gain the functionality we want on those old browsers.
Remember Prohibition? That wasn't lifted because people wrote to their Congresspeople, but otherwise respected the law and followed it. It was lifted because it was widely disrespected, and a huge black market for alcohol was created, along with a lot of brutal violence. Same goes for civil rights for black people in the 1960s. Same goes for civil rights for gay people (like legalizing gay sex, previously criminalized). People committed the crimes and got caught, it went through the justice system somehow, and either a law was passed or the Supreme Court rule on it. It took a Supreme Court case to nullify the anti-gay-sex laws when some people in Texas were prosecuted for it and it got appealed up to the supremes as a privacy/freedom issue.
Changing the laws is the long-term solution.
Not buying drugs from big cartels is the short-term one.
According to you, the people in the Underground Railroad were doing the wrong thing, and should have followed the prevailing laws on slavery, and it was wrong for slaves to rebel, even when they were being brutalized and murdered. Your position is disgusting and repugnant.