This way the weight of the saw and therefore the cutting force will always be concentrated on a small number if teeth, which are able to slice deeper thanks to the extra force. Remember that when crosscutting you need to slice wood fibers. Rather than shear them as you do when ripping.
Not trying to insert my own opinion but I believe it’s because the core Lemmy devs actually admin and/or are involved in said instance. Well verify for yourself but somebody said it’s hosted from the same IP as lemmy.ml. And the core devs comment and moderation histories are public for all to see.