I think it is fair to criticize these extremes, Spock's mother vs. transwarp beaming. But let's not forget that there was enough (it wasn't too much either) techspeak, gravitation was too strong or whatever.
I liked the way they used the transporter overall, it was always embedded dramatically. The whizkid showed his skills but couldn't save Spock's mom and the miracle worker messed up twice before he got it right the third time.
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