I prefer that a writer doesn't "modernize" her/his work. There will always be technological (and other) innovations. I don't see how adding something like a cell phone could make the story better. But yes, fix mistakes if you get the opportunity.
It's hard to say what I do that's a time waster - if I learn even a tiny thing I consider my time well-spent - but if pressed, I'd have to say playing solitare on Pogo is a waste of time.
I know the Amish way of life seems romantic, but it'd be very difficult for me to live without at least a few of today's modern conveniences. Still, I admire and respect a people who can band together in faith and community in a way few groups can.
I'm not driven to read a book based on an author's gender, although if I look back on it, I'd say that most of my reading-by-choice books, as a young person, were written by women; most of my assigned-at-school books were written by men.
I do find books by female authors generally easier to read.
Another reader-non-writer here! I wonder...do you think that a writer's theme might reflect some of that writer's life experiences? And are readers drawn to themes that reflect their history?