Because it's a bloody catchy tune basically.
It's non pretentious, ballsy punk pop rock, with an uplifting, call to arms, football terrace, chant-along chorus.
It has a familiar feel, almost as if you've known it for ages, which can only help.
I hate myself for comparing new songs to things I've heard before but it's only human nature, and I can hear original punk with hints of Rancid and Distillers punk revival thrown in, with a healthy nod to The Ruts' 'Staring at the Rude Boys', all great stuff.
Whilst feeling familiar it also feels new and exciting, especially to a generation that hasn't experienced punk and its nineties revival, helping it appeal to a wide age span.
Look at me, the music critic 😄.
The bass is sounding especially great in the bit between the Clash quote and the lead break.
And a link needs adding here because I clicked your screenshot again.