given that PETA is largely a laughing-stock in the general public, with
little or no traction for their ideas, I would say
(as I did when you stated this stuff 7 years ago or more),
it is VERY unlikely. I merely look around my PA local area at prevalent
attitudes and see two key trends:

1. The tradition of angling is still strong, and pressure to preserve waters
for fishing is still strong
2. Aging populations will, as others suggest lead to a
diminishing pressure upon the resource to the point where
it will be a non-issue.

now, fact 2 could be used to argue that the PETA crowd will win out via
lesser resistance, but I feel much of the resistance to their agenda is in
the pure silliness of the approach and arguments. Time will tell.......
Tom