That's a common anti-immigrant conspiracy.
Intersection with Fortean subjects there ... myths and folklores of immigrants. Having just heard a podcast about Nero, it's the sort of thing Christians were accused of in the 50s. As in 50CE.
If I had time, I'd dig through my collection of old magazines (anyone else running out of space 😀) and predict the next cycle of anti immigrant headlines. Maybe make a bingo card for when you meet a real thicko and compare it with their FB/X drivel.
Speaking of predictions, I wonder if it's not too late to have a flutter on Jenrick - on the nose. With an accumulator that he won't be there in 2026. He will struggle to contain the swivel eyed loons, and letters will be put in (something rather ASMR about watching the Tories do that in opposition). At which point I think we will see a retread of 2024 without Jenrick, with Badenoch taking the prize. Or if we are really in for an interesting 2026, Patel.