For you, but yes agree to disagree. Maybe The Maker of The TM changed the design on later iterations, but how you get the slot as an affordance to fingertips is a reach too far for me.
No it's always been the same, my original TM was dropped with battery in it, I used to not screw the cap all the way down, so it would be easier to grip and change battery faster, however after the drop now it has to be screwed all the way flush to make the connection... I still don't really have trouble with it though because a gentle press down gives it enough room in the threads with a battery in there to unscrew, and pressing down to screw back in is also not a big deal for me, just using the tip of my thumb... With my newer TM, which is now itself older since I got it over a year ago, it is maybe machined a little better with the aluminum threading so it works even better, though it does like to go down all the way flush, and I think it is more safe security to do that, it is not fully flush but close when I screw down all the way, not over screwing, stopping as soon as there is resistance. And it is still quick and easy for me to unscrew, just gentle press down with my thumb tip as before... It's not like you're really sticking your fingertip in the slot, the slot is inconsequential, it's just any texture to have some sort of grip as you press down in, that's what makes it easy to turn the gentle press down, loosening it within the threads if that makes sense... Perhaps it is not exactly mindless, but almost nothing I do is lol