I only like to wind people up who have strong but slightly illogical viewpoints. Once wondered what would happen if I contacted them making like a potential new activist then turnup head to toe wearing some animal products. Of course I didn't because I had no idea where I could get a fur coat from and all the other stuff.
BTW do vegans realise that they are making no impact on the farming of animals. Also I really do like vegans who wear clothes and footwear that have animal products either in them or used as part of the production process. I reckon in this modern age there is very little out there that is completely free from animal products. You can forget wine and beer for starters!!.
PETA are not exactly reasonable people so I reckon it is wise not to wind them up. Although I do wonder if the anglers thing is correct though. I don't think so because most of the anglers near me are the biggest cocks I've come across. I'm afraid I used to go kayaking and that is why I have that opinion. It is only on a few rivers. Most of the rivers in the Lakes are ok its just the nearest to me have some rather worrying people who threaten anyone who might use the river other than their fellow anglers. Bad apples I know but its a few bad apples that can tarnish anything.
Got a Yank over here at work for a while. I always find it funny their views on our hunting and fishing opportuninties. Apparently its starting to change in parts of USA like over here with restrictions on hunting, things costing more, etc. Not a hunter myself but know some deer hunters in past and they moan about cost of doing it. The Yank says its getting that way in places with hunting and fishing. Unless you go out west that is. Heard Russia is the place to go for hunting.
I'd ignore PETA's email and mark it as junk. I'm sure they had no idea you were an angler and their researchers are probably not good enough to know if the size thing is true. If it is blame the cold when you're fishing.