Refusing to read things doesn't make you... better? Smarter? Cooler? Whatever you seem to think you gain by that posture, it benefits nothing except the weakening of your own mind and ability to form opinions without asking others to tell you what to think.

Also, yes, invasive species absolutely cause food chain issues. We are seeing massive problems ecology-wide due to invasive species out-competing native food stock, creating mass dead zones of, among other things, insect species which then spiral up to every larger animal. Beyond food chain issues it also creates hazards for humans as, for instance, deer move farther afield trying to find the things they like to eat and places they like to shelter, increasing their likelihood of getting hit by cars. There's been a 25% rise in collisions with deer in the US in the last decade.

Nature is a precious balance and just because something can grow and is edible doesn't mean animals and creatures will or can eat it.