Let's be honest, most techies do that from India to Israel to Poland to US.
That said, Eastern Europeans are fine with occasionally partaking in crunchtime.
Meanwhile, when I dealt with our Western European sales and engineering teams they would all ignore messages even if a Tier 1 critical customer's shit hit the fan.
WLB is critical, but there are occasional exceptions that need to be made.
Why should I pay the same amount that I would in Eastern Europe, Israel, or India for someone who won't help firefight.