The problem with 600 character limit in User Reviews. Have you noticed these?

Hello, as a regular movie reviewer, I have been struggling with 600 character limit that was put one or two weeks ago. But today, I realized that I am not the only one dealing with that. I was reading recent reviews from some other users and found these:

https://www.imdb.com/review/rw8538333/?ref_=tt_urv

https://www.imdb.com/review/rw8527636/?ref_=rw_urv

I am not reporting them. Please don't remove their reviews. It will be very discouraging.

On the other hand, this one is from someone with over 4000 reviews. It is slightly over 300 characters. Check the Likes he received. It is listed #1 in "Featured" ranking. 

https://www.imdb.com/review/rw7647233/?ref_=rw_urv

I just want to tell that sometimes there is not much to say about a movie or you can express all your opinions in less than 600 characters. Don't you think it is a bit too high? Why not reduce it to 300 characters for example?