It is the same reason why not checking the southwest awning doors at the church to see if they were open is strange to me.
There are quite a few reasons why the Loser perp would have picked the door they did, that are way more likely than the idea they were trying to be tricky in their choice.
1 There's nothing odd about not going on the outside door to door, in heavy drenching rain, around a very large building with many doors.
2 No one has said any doors were actually unlocked, have they? So perp not wasting his time, maybe it's because he rightly didn't see the point.
3 Both the awning and the W-side doors could be seen from the highway, and someone trying to break in perhaps attract police attention. The kitchen and back-side doors could not. That makes a huge difference in choices.
4 Other than the kitchen door, the other doors actually had TWO layers of locked doors, which were electronically locked (which means they would be always be AUTOMATICALLY set to lock or unlock). The likelihood that any one of them would have been unlocked, while the others were locked, was essentially zero.
5 The various double doors also had cams to avoid. The kitchen door did not.
6 Loser perp did try one of the double doors first, but gave up. I am guessing they became deterred by two layers of locks, and then bailed when they saw it would be followed by cams.
...I'm wondering if he would have at first been wearing that clear mask while trying to break in - that seems like it would have been smothery, rain-smeared, hard to see, wet or foggy, and something that likely would be ditched quickly as he tried to gain access, making cams extra-problematic.