Sorry but this doesn't add up and it's not fixable because the argument is broken and I doubt the numbers are even in the right order of magnitude when considered in context. (That's before considering that it also had the effect of you writing and sharing this post - what's the second-order-effecf of people seeing it increasing their use as result of that and resharing the same idea with their peers etc? What's the network effect of your digital clock?)
You are rationalizing your laziness in an attempt to cope with the negative effects that you truly deep down know are there.
Sounds to me like you're rationalizing your laziness in researching and sharing more accurate numbers because you want to justify "the negative effects that you truly deep down know are there".
If I'm going to be accused of rationalizing my laziness I need at least one source saying my numbers are off. I'm going off the numbers provided by environmentalist critics of ChatGPT. I hope that by sharing my post people feel exactly as guilty about using ChatGPT as they do about buying one additional digital clock.
You are rationalizing your laziness in an attempt to cope with the negative effects that you truly deep down know are there.