No, I don't agree. Creating a backstory for a cheap rise is bad writing, like a ratings grab mentality. A certain amount of embellishment can dress up a past and be interesting, but where do you draw the line? If indeed Vulcan history is limited then they are fair game..Isn't it boring and pointless to tell the backstory exactly as expected, though? Yes there may be misfires (the male Orions are the slaves!), but things like Spock being the guy running Kirk's infamous Kobayashi Maru test, or Data's granddad being involved with modified humans before switching to robotics as a means of creating "better" life, add extra layers to the backstories IMO.
I hate the way it is done in characterizations. If Sherlock Holmes gets any younger he'll be needing a packed lunch and clues written in crayon to solve his cases. Sometimes the need to address something else ruins credibility.