Because they make a lot of sense. Take a look at Ukraine. Armored vehicles carry jammers and cope cages. They make proper hits much harder. Modern tanks, which are used in Ukraine, are also well enough armored to take multiple hits, before going down. Artillery is still cheaper and more destructive per shoot. Especially in combination with spotter drones, it is extremely deadly. That is why Ukraine is building them.

Obviously drones have a huge impact, but we still see both artillery and armored vehicles being used and delivered. Clearly there are reasons for that.