I agree: it would be a non-issue... i.e., for the vehicle to ignore the timer at public charge stations. It's not about laziness, it's about forgetfulness, distraction, and sensible defaults. It wouldn't be "deciding" for you, btw, it would always charge when you plugged in at a public charger. I cannot think of any negative to doing it this way, so why not?
And for anyone who "would check regardless", it is no additional effort -- zero, nada.
It may seem silly, trivial, or a non-issue, but good defaults can save a LOT of time and frustration, especially as the number of EVs increases.
I think I just felt my paradigm shift.
2012 SL (One of the colors): 2-year lease, 2012+,
2015 S w/QC (A different color): 3-year lease, 2014+,
2017 SV (Same color as 2015 S): 3-year lease, 2017+, lower monthly than either above(!)