I think the additional purpose of Macron and Verhofstadt is not from the devil either but I doubt that they could discourage populist movements by threatening to cut EU subsidies as their countries are net payers and on top of it there is no great chance that even if the extreme parties get to government (which has a very low probability anyway) they will do what Orban and Kaczyinski do; the electorate could be afraid to put these extremists to power but for them Eu subsidies are a small question. Still, a bigger centralisation of decisions and more control could be better than just cutting funds. Tis of course requires resources which these countries are reluctant to endorse as this would also cost them money. Covering these extra costs from the subsidies of the concerned countries (Hungary, Poland) could be a solution, this would not be such a sensitive cut as the outright decrease of funds but do the job.