It is the best and safest, you should use it (Used it a few times on various machines to activate)

I’ve used that script and can confirm it works. I was actually coming into this thread to recommend it. I don’t think there is anything nefarious in that script. Or at least I haven’t had anything bad happen on the machine I used it on. I suppose someone with more knowledge could look through the script to see if anything looks out of place.