Maybe we can agree on the feature being added ? I don't see much use for
controlling how much time the insertion cursor is on and how much time
it is off, but maybe just choosing between blink and no-blink would be
good to have. I would prefer to just get an option inside the "General"
tab that would affect the Text widget creation, instead of depending on
how each platform changes the behaviour.

I personally didn't have any issue with seeing the cursor blinking (I
think I never watched it blinking carefully), but now that you say this
it does annoy me if I watch it :)