Spain's economy grows but unemployment is still a massive problem because the main industries are seasonal, low-paid agricultural and hospitality work. To switch to a high-tech, high value-add economy would requires deep changes that would be painful for many voters.
The current government still plans to close all the nuclear reactors, it's still hard to get permission for construction (leading to a massive housing crisis despite having a surplus of housing in 2007, before the crisis).
That said, degrowth only seems to be a popular view among the leftist elite and I'm sure that once the consequences start to bite (we had a blackout in Spain, the energy prices are incredibly high in the UK and Germany - leading to a loss of jobs as factories close) then the electorate will profoundly reject this ideology.
You seem somewhat confused about this issue. Degrowth has little to do with abstract economic numbers such as GDP, and precisely criticizes its very concept. Degrowth is an alternative to greenwashing, aka "green growth" destroying our planet in the name of saving it...
"Degrowth is an academic and social movement[1] aimed at the planned and democratic reduction of production and consumption as a solution to social-ecological crises.[2] "
Giving the first sentence this would lead to a smaller GDP.
We see the results of a stagnating GDP in Germany and UK and democratically people don't like it.
The current government still plans to close all the nuclear reactors, it's still hard to get permission for construction (leading to a massive housing crisis despite having a surplus of housing in 2007, before the crisis).
That said, degrowth only seems to be a popular view among the leftist elite and I'm sure that once the consequences start to bite (we had a blackout in Spain, the energy prices are incredibly high in the UK and Germany - leading to a loss of jobs as factories close) then the electorate will profoundly reject this ideology.