Yes those tabs are thin ones and if the cover is installed the proper way, the tabs will lock in and will indeed prevent the cover from coming forward as designed.I'll have a look at what you are saying when the time comes Bounty , but I remember
those 2 tabs that go between the grille and headlight are thin ones , they are not padded
like the bottom ones , at least on my model , the el-cheapo Mopar gave me on R-51 program
it has no closeable flaps , 4 holes open all the time .
there would really have to be a groove
in that area that prevents the tab to come forward to see any benifits .
I am not against spending an additional 1 minute to improove the install , specially if it makes it more " theft proof ".