1) nobody said anything about them needing to climb things over half a feet tall.
2) nobody called them arboreal even semi-arboreal.
3) nobody compared them to any kind of other snake that may it may not like to climb.
4) even better, my response contained 0 words. It simply contained to pictures of exactly what was happening in time and space as this question was posed.
My comment is to be taken in unison to everything that had been said regarding to them occasionally climbing, etc. Which is literally what you directed towards OP, but I just did in 2000 words... I mean 2 pictures.
Good day sir.