is it true that 'everyone is leaving the uk'

or is this just fake news? i just saw a video on youtube titled ' why everyone is leaving the uk, & you should too)'

and it made me a bit concerned as i'm patriotic to this country, i'm what you call a 'little englander' and i will never leave the uk, it is my home until the end!

but at the same time i wouldn't want every other british person to leave the uk and me be left on my own with the immigrant population.

what do you think? should i worry or not?