Rowling is 55. She’s Gen X. She’s not an ossified boomer who grew up in ye olden times of wattle and daub huts. She’s decently educated and has internet access.
She doesn’t get the “helpless senior” excuse.
I get what you mean with regards to the ossified boomer generation though. I can kinda excuse them. I don’t -forgive- them, because growing old is no reason to stop taking in information. But I can understand them.
Younger, reactionary muppets who think personal conviction is a fully legit substitute for knowledge and understanding, though? They need to jump into an active volcano, legs first.