In the poll they seem to contrapose capitalism and socialism, which is a false dichotomy. Both can coexist and benefit the society. Look at Scandinavian countries for the example.
So yes, capitalism and socialism are contraposed to each other as the prime contradictions in capitalism cannot be fixed with a little welfare and called “socialism” when it’s not that.
If you’re trying to imply that the existence of a free market makes Finland socialist then it might sound made up because it is made up. Free market doesn’t mean a country is socialist, in fact socialism puritans would say the existence of a market economy means there can’t be socialism. There’s market socialism but Finland doesn’t really fit those models either so in what way is Finland socialist? Because the social democratic party is popular there? Most socialist agree that social democracy is not socialism because its policies are not trying to phase out capitalism but rather try to coexist with it in a mixed economy. Marxist theory implies one purpose of socialism is to depreciate capitalism, which means social democracy is ideologically incompatible with socialism.
The terminology is not too confusing. It’s confusing to people who don’t really understand what socialism is. We can agree that understanding socialism isn’t easy, but that’s mostly because people just don’t read what Marx wrote. You can’t understand socialism with the capitalistic definitions of profit, capital, etc.
Now you’re just contradicting yourself. You consider free market as socialist while the socialism taught in the USSR was based on Marxism-Leninism, which would never consider any market as socialist. How can you give free market as an example of socialism when the socialist paradigm you grew up with would never consider free market as socialist?