Bulgaria has a pegged currency to the Euro since forever, they got quite depopulated after 1991 and their only chance is to become a tourist destination and to attract some investments from Türkye and maybe Greece, because nobody else would invest. The fact that Romania isn't interested in builing more bridges over the Danube and that Serbia isn't part of the EU also puts the northern part of Bulgaria in a tight spot. If you want to see what a depopulated country looks like, travel through northern Bulgaria. It looks like the descriptions from the book The World Without Us.

It’s also funny to see how anti everything related to EU/Europe most of the tech people are. You can see this here, like most of the comments that now proclaim the death of Bulgaria or Germany bailing them out, from people that have no clue on the background and history of this move.

Moreover, Bulgaria does not directly compete with Germany in the same product categories. Bulgaria is integrated into supply chains, often providing components or assembly work for German companies.

You are only 7M. I’ve got the feeling that it is just not large enough to significantly be distorted by eurozone monetary policy, at least in the way that might affect much larger economies.

Apparently, they did not use that control in the last 26 years.