I am very curios about this laptop thickness topic. I understand that going from 3 cm laptop to 2 cm is a noticeable difference and might have some practical effects. I can believe that 3cm laptop does not fit the bag well, but 2cm does.
But here we go from 1.8cm to 1.55 cm, does this make any practical, visible difference?
No. It's a matter of being used to something. When used to 1.8 cm, you go "wow" at 1.55, but going in the reverse direction is a shrugging matter. For weight it's the opposite. When used to a light laptop, you find a slightly heavier laptop to weigh a thousand tons, but going from heavy to light is a shrugging matter.
It does. If you have an old MacBook Pro 2015 and MacBook Pro 2016+ the difference is quite noticeable.
But the trade off from 1.8cm to 1.55cm is subject of your personal opinion. In a perfect world we would want a 1.55cm laptop with the same heat removing capability as the 1.8cm.
But here we go from 1.8cm to 1.55 cm, does this make any practical, visible difference?