In the US, new commercial pilots (with ATP license) earn somewhere in the $20k-$40k range.[1] And many take on massive debt for the privilege - college degree and flight training together can cost upwards of $200k.[2]
Yeah, thats not true. The chart you link to says new first officers based in Dublin make 78.400 EUR (with "Productivity" which might not be guaranteed). And since Stansted Captain salary is lower, i would suggest that Stansted FO salaries would be lower too. Additionally, other bases in southern Europe might be even worse.
You are right, the figures are misleading and do not represent EU pilot salaries. Apologies for the error.