The way I wrote it makes it look bigger than it is

• I worked at the startup as an apprenticeship (2 years) during my master's degree,
• Barely did 4 months in a dev shop (they seemed stingy from the get-go so I continued looking for work as I was starting there)
• A year in the big corporation
• A year in the small company
• Ongoing half a year in big-international-government

Overall it's just ~3 years out of school

If your coworkers are like that, it's all ogre, this is the company's culture and they're never going to let go senior people who became friends with everyone if irreconcilable differences were to arise between you and them - also management probably shares the same opinions