Some Longterm Fans Of Star Trek Are Nervous About Alex Kurtzman - Why, And Is It Fair?

This user commented on the established canon:

I have a lot of respect for Nu-Trek, I do. But I feel like it also just has a certain level of disregard for existing canon and that isn’t necessarily fair to the long time fans that have welcomed Nu-Trek with open arms and given them a fair shot.

This is a very valid worry that many long term fans of the franchise have had in regards to Kurtzman's involvement in the franchise. By the very nature of the story in Star Trek 2009, the universe was reset and we were experiencing Star Trek in an alternate reality. This gave the filmmakers free reign to do whatever they wanted. Financially, it was a gamble that paid off in spades. However, many fans were left in the cold, wondering what that meant for the previous 50 years of history.

Then, it was announced that Star Trek: Discovery would exist in the 'Prime' universe, which filled many fans with hope - and then the trailer dropped.

There was always going to be an issue in setting a new series before The Original Series. Technology has marched so far forward in 50 years that sticking to the original aesthetic was going to be an issue. This is an issue that has many fans divided down the middle - they are happy to have new Star Trek, but at the cost of old Star Trek?