I've known and loved the Bothy version for decades. Had I detected any misogyny in it, I'd have dumped it after the first listen. Like lots of relationship songs and stories, it seems to me to be about imperfect human beings, no more or less than that. When it comes to "whistling out," yes it can amount to misogyny if it's designed to harass or cause embarrassment or distress. Equally, back in the day it could just have been just casual, peer group-led laddishness that amounted to very little. Who's to know? I think it's a lovely song, performed beautifully.