Hahah sounds about right! That's how it is here, too. Personally, I love it coming back again and again! Great idea about using it as a trap plant - obvs from that overeaten leaf pic above bugs love it!
What are you findings with flax? We grew some our first summer, but didn't really harvest it and it didn't self sow.
The flax was beautiful the first year we planted it, did very well and is pretty hardy, drought resistant. Our garden plot is blasted with all-day sun, they never wilted. It ended up self-sowing, but, I didn't encourage it as much as I should have. I think this season, I'll re-focus on the flax. You can use flax for just about anything from flour to fiber!! (But I know you know that!)