Nevermind. Putting a climbing platform won't work anymore. It worked in the video because it's from some months ago and, as it's been mentioned here several times, the traversable area/hitboxes system has been changed ever since, making this trick no longer work. Sigh...Just wanted to give you guys a heads up on this matter.
I was checking Mealie's content thanks to his recent thread and in one of his inspiring videos he does find a way to circumvent the issue (at least partially). The bad part is that it only works for animals that are able to climb, so it still needs a proper work around by Frontier, obviously. But oh well it's something.
Btw, needless to say this guy's content is very recommendable.