That sentiment makes me glad they don't allow fans to decide the cuts of movies.
The SLV (not SLC) is the worst example of 'kitchen sink' style of extended versions. Horrible case of putting in almost every line of dialogue back in a movie no matter how inapproipriate.
It would be a decent movie at 120 minutes with a some more cutting and the welcome addition of the key deleted (in 1979) scenes: Spock crying, the destruct order, Sulu acknowledging Kirk's desire to regain command, Kirk mentioning McCoy's reluctance to use the transporter, Etc.
But the travesty of adding 12 minuters of mostly dull nonsense to an already slow movie is ridiculous.
But, all that said, they should have released the SLV via seamless branching in the Blu-ray release, since it would be compatible with the theatrical version. I say this only because they had the precedent of releasing the SLV in an official home video release in the past.
And, of course, all the deleted footage from all the movies should be in separate sections of the discs if the director thinks they shouldn't be part of the actual movie.