To use an extreme as an analogy:
Imagine someone buying an original da Vinci painting and deciding it needs to be livened up for contemporary art lovers. "We just had to do something. It was soo out of date."
Let's take it one further.
The person who owns that Da Vinci painting was a close associate of those who were close to DaVinci, possibly knew DaVinci personally and had worked with him for several years before his death. And they conveyed to the owner that he wanted his own painting to have certain things that he couldn't do because he had limited time and resources.
The owner decides to restore the painting and retouch some of the brushmarks lost in the restoration process. He adds a few flourishes of his own to reflect what Da Vinci would have done had he had the time and resources under the supervision of those who were close to Da Vinci. He decides to show off his version of the painting, not claiming it to be an original work, but a restoration with some touching up to celebrate some significant anniversary of the original work.
Suppose he also found a way to preserve the original and has it in storage, so future generations can see the original as it was and can compare the two versions.
There will be people who will hail this new version as heresy no matter what.
There will be people who will appreciate it for what it is: a Tribute to the original done by someone under the supervision of Da Vinci's close associates.
Either way there have been plenty of replications of his original work and no one is saying that this tribute version is replacing the old one. Both can be enjoyed and compared.
The only difference here is that we are talking about a TV show. The original TOS is there for people who want them and the TOS-R is there too. In time people will appreciate both for what they are.