Prepping for major emergencies and disasters can take years to accomplish. My advice for those who aren’t ready is to put together a basic kit that can get you and your immediate family covered for about 3 days.
It’s also my opinion that serious prepping involves drills and practice. In order to identify and correct kinks in your plan and acclimatize you and your family
According to the original post, prepping didn't do much for Ukrainians: Many of these towns and cities have been basically leveled. Destroying the preps of many people in situ.. A basic kit as you suggest that is easy to grab and go is probably best.