Fair enough, so if you write the take-offs and landings* in those columns then you can check your 90-day currency at a glance.
But it's a bit cheeky of them to claim it as some kind of special feature. You can write those things in the "Comments" column of any logbook - and that, indeed, is exactly what I do in my Pooleys one.
Presumably, if the number of landings isn't the same as the number take-offs you've got more to worry about than just your 90-day currencly.