So a bad plant gone wild! Are they telling people to get rid of it when they see it or what?
Yes, siberian squill is highly invasive, nobody should ever have/keep it. It seems like it's in the awkward phase where everyone in the area knows how bad it is but somehow it's still legal for garden centers to sell it, at least in some states. I don't think many do anymore, though. Extremely invasive especially in the midwest and east coast states. It spreads across lawns and easily escapes yards and spreads into the wild. This map shows where it has spread into the wild. Worth noting here, each square is not one single documentation. There are 12,500 individual documented locations.
Years ago I took this photo at Hawthorn Hollow Nature Sanctuary. I thought it looked amazing - and it does, but then I looked into what the blue flowers were and that's when I learned about it. It can completely take over deciduous forest floors and completely crowds out the native plants. This area should be filled with virginia blue bells, rue anemone, trillium, trout lily, and so many other great natives. Thankfully they've been working to remove it at Hawthorn Hollow, but it still pops up there every year.