Not the way I read it, more that the UK should not be rewarded.
Has anyone other than you made that claim ?
One of these things is not like the other. That's like me wondering why my neighbour has a much nicer car than I do when I earn more. The reason is that he prioritised spending over other spending (or saving) items.
The U.K. is a large net contributor due to the size of our country and the strength of our economy. When net contribution per head is considered the UK is well down the list.
The UK has contributed a great deal to the EU over the years. The UK was part of the ERM moving towards joining the Euro until it collapsed costing the UK billions. The EU allowed countries who did not meet criteria to join the Euro bringing about the Euro crisis. The more people here argue that the EU is perfect and that it is beyond improvement the more you convince me that exiting the EU was right. (And I was wrong!)