It's not a perfect measurement, but it creates a metric that is easy to calculate and it's easy to compare the economies of similar countries or the same country across time.
So does Net Material Product. Why don't you bring data with those numbers instead of a metric by which an increase in rent costs and healthcare prices makes GDP increase? Ireland GDP for example is fucked up because of the obvious effect of financialization of the economy now that they're a tax haven. Surely the financialization of the economy has a lot to do? Let's compare instead stuff like tons of steel produced, number of housing units built, homelessness, access to healthcare, emigration rates... you know, the things actually affecting humans, not "line go up".
The system that abandoned the rural regions was actually the Soviet Union
Bffffhahahahahha... Oh god, that's hilarious. How many abandoned rural hospitals are there in your country now that socialism is no more?
rapid industrialization created a massive demand for workers who would abandon the collective farms and move to cities in droves
Smartest section in your comments so far. Yeah, that's a reality of the situation, but in that process life expectancy of people in the countryside was doubled. The rapid industrialization is a controversial policy of the USSR, I agree, but it's one not taken out of ideology, it's one taken out of necessity against external invasion. Famously, in 1931, 2 years after the beginning of collectivization and rapid industrialization, Stalin said in a speech (paraphrasing): "we are 100 years behind the rest of the world, and we need to catch up to them in 10 years. Either we do this, or they kill us". 10 years later, operation Barbarossa began, in which the Soviet Union saved most of your people from slavery and genocide. This was only possible thanks to the newly-created industrial might, which allowed for example the USSR's T-34 to be the most manufactured tank in WW2. Had there been no rapid collectivization and industrialization, you wouldn't have been born because your ancestors would have been entirely genocided by Nazis.
Speaking of your population. Assuming you're Lithuanian, the population peaked at about 3.7mn in 1990, then dropped to 2.7mn in 2020. Surely capitalism is working wonderfully for your country!