Note that this is assuming you are calling not pushing. If you push, you have folding equity (although this is very close to zero heads up if the blinds are big).

So, at some level, you can say it's proper (+EV) to push every hand. The problem is, after the first couple of pushes (that are folded), you opponent will figure out that you are pushing with any two. This makes it trivial for him to figure out if he should call or not (i.e, he should call with anything >50% equity against a random hand,

Q2/J6/T7/98s,
Q6/J8/T9o