But isn't that the point of a reboot, to have a different take on a character? Reboots never pretend that their characters are the same as ones they are adapting off, that's why they're reboots. Adaptations. They can pick and choose.
I understand being irritated if they were supposed to be the same characters but failed to be so. For example, if Leonard Nimoy's Spock in the reboot movies is drastically different from his portrayal before this. Or another example, if they made an actual prequel to TOS instead of a reboot and wanted to make sure that these are the same characters that will grow into William Shatner and company. In that case, there may be reason for being annoyed if characters feel utterly different from before.
Reboots allow a new take on a character while keeping certain recognizable elements. Maybe that's what you'd call a cartoon, where new Spock is just enough Spock that you'd know he's Spock, but different enough that he's not really Spock (Prime). I wouldn't have it any other way, since it is
suppose to be a new take on the characters.