It is masstocklkaksi, who expressed his feelings through a reddit post he made recently. He said that climbing while exploring was very tiring and troublesome, especially the implementation of Stamina which increasingly drained as you climbed.
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Another redditor named rouye_ also agreed with mastoklkaksi’s statement. He also added other reasons such as the new map released yesterday, Enkanomiya, full of building locations and places that seemed to have to be accessed by climbing. But even more annoyed, he realized after reaching the place, apparently climbing was only an alternative option, and he was annoyed with it.
Of course, not everyone agrees with this and considers that climbing in Genshin is actually a point of excitement in the game. However, there are also some players who suggest MiHoYo to try implementing Grappling Hook which is currently quite popular in several open world games, because it makes it easier to explore a place in a fairly short time.