After the number that the staff determined they were going to carry at each position was set, you would not cut a QB, WR, or OL to add another DT. The only one you mentioned that could be argued us Fua. However, as many of us get...Fua us a NT and we added an UT. You cut an UT in order to sign a better UT.
I am amazed at how difficult it is for much of the huddle to understand. I thought we had a more knowledgeable group than that...but apparently I was wrong.
You know that old saying “you can lead a horse to water but you can’t make it drink". The same thing can be said on here, you can lead the huddle masses to logic but you can’t make them think.