I don’t buy it at all. If you are that used to conversions, you probably remember the direct offsets by heart. I know I do for the three or four time zones I care about.
That said the whole conversion thing is not an immaterial burden unless you’re really up in the sky longer than walking on earth.
The whole point of UTC is to have a shared reference baseline to communicate with the world; however the author is obviously not concerned about that, I don’t think, as they have to do the conversion into the third party’s local time in their head if they want to have any friends, so that point is moot.
That said the whole conversion thing is not an immaterial burden unless you’re really up in the sky longer than walking on earth.
The whole point of UTC is to have a shared reference baseline to communicate with the world; however the author is obviously not concerned about that, I don’t think, as they have to do the conversion into the third party’s local time in their head if they want to have any friends, so that point is moot.