Mechanical switches aren't even reliable for this because of how 3-way switches work (their state doesn't indicate the state of the light). Unless you remember which are 3-way and which are single, you can't trust any of them. With smart switches in the same locations this is a non-issue.
An interesting thing is switches where you can't see if they're on as easily, such as the outside front lights, are for the most part fully automated (based on timer/door/motion and/or camera object detection) and we basically never touch the switch at all.
It's important to be consistent, though, since you technically can program the switches to do anything. In my house pressing up once turns the light on as you'd expect, but in some rooms the light will be less than 100% or have a warmer color temperature at night. Pressing twice turns on max brightness (or something similar, such as: 5000K color temp; also turning on the lights an adjacent room; turning on _all_ the backyard lights). I rarely use 3, 4 or 5-taps except for a couple special things (eg: 4x off on my office switch puts my PC to sleep; 3x on one of the basement switches activates a "party mode" my kid loves).
