In Poland most people scoff at any mention of unions for software developers. I think this is because we're still in the phase of quick SWE salary growth powered in large part by the best performers in the field being good negotiators in salary talks with incoming foreign capital. They drive the companies' labor cost expectations up and it benefits everybody in the field.
There's also a huge disparity between the SWE salaries and the rest of the society in Poland, I can imagine fears that unionization overall would flatten out those differences.
Another factor is that in places where we have unions (leftover fields still highly tied to the government, e.g. teachers) they tend to not function very well in practice (not enough employee advocacy, unhealthy level of union politics affecting people's outcomes in the workplace etc.).
Lastly, we're still pretty fresh to the whole capitalism game as a country, so we're scared of anything that resembles a step backwards.
There's also a huge disparity between the SWE salaries and the rest of the society in Poland, I can imagine fears that unionization overall would flatten out those differences.
Another factor is that in places where we have unions (leftover fields still highly tied to the government, e.g. teachers) they tend to not function very well in practice (not enough employee advocacy, unhealthy level of union politics affecting people's outcomes in the workplace etc.).
Lastly, we're still pretty fresh to the whole capitalism game as a country, so we're scared of anything that resembles a step backwards.