I'm using that "technique" because you are being ignorant of the facts. Your entire argument is childlike. You are operating classic Tory distraction techniques to mask your own issues.
Let's break it down:
1. Has Brexit prevented us spending the exact same amount on the region that was previously spent by the EU?
2. Have the Tories decided not to spend the exact same amount on the region that was previously spent by the EU?
If 1 is the answer then it is a Brexit problem. If 2 is the answer then it is a Tory problem.
If it's a Tory problem then the blame lies with the people that voted Tory.
If it's a Brexit problem then the blame lies with people that voted for Brexit and/or the people that voted Tory in order to "Get Brexit Done".
Where do you land here? I know you are some sort of "reformed Tory" these days, although you'll undoubtedly vote for them again when it suits you, just like last time as I haven't seen you come out as pro-anyone else yet. But even you must recognise and accept the fact that you voting for them and now regretting it means you were either conned, selfish, ignorant or stupid (or a combination of the above). When people voted for Brexit it wasn't 100% clear how things would end up. When they voted for the Tories at the last election it was. You can't pretend they are doing anything other than what the rest of us knew they would do which means you were happy with the policy of shafting the poor and the northern towns as usual att voting time so what has changed? Tories are just being Tories, exactly as you wanted them to be.
P.S. By the way, the answer is 2. We are free to spend as much as we like on the region, Brexit hasn't stopped us in the slightest. The Tories have decided not to.