This is the exact problem with the replacement theory. These people aren't forcing anything, and they sure as he'll aren't coordinating a replacement of a race. This is the crux of the problem, and why the replacement theory is so dangerous, it makes immigrants out as some invasionary force that is going to take over your country. These are just people. Regular people like you and me.

Are they really? If I plant invasive weed in your garden that saps away the nutrients and eventually replaces all the plants after five generations is that considered a invasive weed? Also, I come back every few months to boost the growth of the weeds and chop away your other plants that are blocking the sun of the weeds I planted in your garden. The weeds didn't coordinate the replacement of the plants in your garden because I was the one planted the weeds in your garden. If I get punished at all, sorry you are stuck with those weeds because they are just like every plant in your garden. Also if you attempt to remove the weeds, well these peaceful weeds secrete a poison that kills some of your remaining plants if you attempt to remove them all from your garden.