I mean, Israel has demonstrated much the same approach (confined to a much smaller territory) nonstop over the past four months (first missiles and now 155mm artillery and tank shells), so it’s definitely not just an Eastern Europe thing.
Missiles are extremely expensive and you’ll soon run out of them during a long war of attrition (especially in a symmetrical conflict like in Ukraine)
Culture has nothing to with that.
Disclaimer: I consider leveling cities with the goal to displace people to be disgusting, and a borderline war crime. Regardless of the parties or reasons involved.