No... No, JWs don't DF people for taking blood.
Let me explain from experience.
I sat in on a judicial committee. The brother
was not very active in service, only spotty
meeting attendance, he had health issues,
needed bypass, took blood, he admitted it
in a handwritten note the Service Overseer
got from him when he stopped by the hospital
while the man was recuperating. The decision
was made within five minutes of starting the
meeting. The man had disassociated himself
through his actions and admitted to the actions
without writing he was repentant so the paper
work was done and it was announced he was
no longer a Jehovah's Witness, even before
the man had a chance to get back on his feet
and go on with life after the operation. No
visits from "the friends", no sisters making
meals during his convalescence, he might
as well have died on the operating table
as far as the congregation was concerned.
He often took walks along the sidewalk in
front of his house, to regain health, on a
main street of town, many cargroups would
go by I'm sure, I wonder how he felt looking
at them looking at him from within their self
righteous cargroups.
To this day I'm sickened about the whole thing.
Although I went along with putting the paper
work through I first said let's talk to the brother
let him get better and talk. I was voted down.
I'm sick about it inside. It's one of those things
I'm sure I'll have to answer for one day. All I
can add is that I'm truly sorry I went along with
it. I hadn't seen him walking the sidewalk for
a couple of years, maybe he went to a nursing
home. The BOE then got a letter from his daughter
who was never baptized asking if some brother
would give the talk at the funeral home for him.
None in the 8 man group of the BOE would
volunteer; it's not done for DF'ed and DA'd
individuals.
It's a sick cult, we're all too afraid of breaking
men's laws and too quick to uphold what deep
down we know to be an inhumane and uncaring
way of dealing with people we should reach out
to help, to shepherd, to bring refreshment from
the scorch of this "system of things" but we
do the easy thing and go along, to the heart
ache and suffering of innocent ones.
That's my experience on Blood and DF'ing.
So... No, JWs don't DF people for taking blood..