Not a trend. The average publord has always been terrible at assessing situations and taking objectives. Dota is an incredibly complex game and fully grasping the state of a match is impossible while playing, so people tend to make plans and stick to them too blindly, not bothering to actively adapt to changing conditions. Factors like a lack of communication and self-centered playstyles play into this as well.
This happens at any skill level to some degree, it can be frustrating but there's really not much you can do regarding randoms.
