Yeah, on the Shatner Takai thing, I think they both hated each other early on, but at this point It's only Takai with the hate. I'm sure Shatner still thinks Takai is a jackass, but at this point he's pretty much just trolling him for a laugh, which is what he does to a lot of jackasses these days for kicks. He's become quite the comedian in his golden years.
RIP to Nichelle Nichols. I also understand she had dementia issues in her last years, and that is no fun for the person or their family.