I have always noticed this when on the river.
I always notice butts on the bank and it irritates me to see but I try not to let it piss me off too much.
I hate to see butts tossed out of car windows, too.
Look at the ground at a busy intersection and see how many butts are laying around.
I have fished with people who will use their empty sandshrimp container or throw butts in the fishbox.
We live and fish in a beautiful area.
Have some respect.