Source for thinking the degrowth crowd thinks this: Introduction to “The Future is Degrowth”. Does the degrowth crowd really think they can get rid of capitalism without any violence? This seems to have the opposite of a historical precedent, and is a deviation in Marxism, which they seem to heavily draw from. Anytime revolutionaries took the peaceful road they got outcompeted at best and massacred at worst.
There will be growth temporarily as we transition our farms to more sustainable methods of agriculture, lots of work is to be done. There will be growth in chaning our energy infrastructure, for lots of work is to be done there. There will be growth in building durable electronics and infrastructure for us to depend on built with free and open source software managed by communities. We’ll also need to build recycling facilities to recycle all non organic matter to build replacement parts to maintain our infrastructure. Things like that.
However after that, we won’t be buying new things so frequently. We’ll consume less, but enjoy more.