Right now there is a brutal invasion, more pressing matters, such as destroying russian troops.
Exactly. We will deal with banderopithecs later; there is a more dangerous thing to deal with at the moment.
Is there some movement or political party demanding to reject the support from Brussels?
I've heard similar declarations from some politicians of Konfederacja and Solidarna Polska (a part of PiS coalition - ZP), but more importantly I hear it from an increasing number of people; and if more and more people have such approach then it will eventually be expressed more in politics. The funds, among other things that I mentioned, are driving local governments deeper and deeper into debt, as they have to provide 50% of money for investments on their own, and they get the money by taking out loans (and very often squander it). Again, there is no such thing as free money - there are always strings attached, and it creates a whole culture of depending on handouts rather than on hard work, discipline and thrift (not to mention that it creates favourable conditions for corruption).
Poland is still the biggest receiver, no matter how many tanks they will send
I don't see any connection here. European money for Poland was stopped (which eventually will turn out to be a good thing) and the tanks were/are/will be sent anyway. Poland should be very careful about accepting any funds, if they are given under condition of resigning our national sovereignty - too many people died for it. PiS have shot themselves in the foot by agreeing to the EU's conditions, and
they won't see the money anyway, because the EU is interested in the government change in Poland and not in any silly "rule of law" nonsense (those who were very vocal in attacking Poland in recent years were recently found running around with bags of Qatari money - that's their "rule of law" :D).