This is entirely true. I sometimes wonder if our tribal left wingers ever go outside of Hackney or Haringey, because if they did, they'd find that normie white Brits - even Reform voters in Essex! - have more nuanced views than they might imagine.
Normie white Brits think that too many people are coming in, they worry that the wrong kinds of people are coming in, and they don't want migrant hotels in their communities. But they like their black friends. This is why overt racism is very unpopular, and outfits like the BNP have been defunct for years.
Normie white Brits don't like ethnic enclaves, but they're generally very well disposed towards minorities who integrate well.
Normie white Brits worry about radical Islam and are horrified by stories of grooming gangs, but they won't hear a word against Mr Iqbal next door.
Normie white Brits - even Millwall supporters! - are quite happy to support anti-racism campaigns in football, they just don't like importing American racial politics in the form of taking a knee for BLM.
Normie white Brits like to see themselves as moderate, and having the likes of Zarah Sultana or Leanne Wood or Charlotte Church call them "racist" or "far right" simply for not supporting the far left's view of immigration will just get their backs up.
Tommy Robinson has a following in the country, but polling shows he's extremely unpopular with the majority - his approval rating is similar to that of Meghan Markle or Keir Starmer. It seems to me that it's the British left that's working hard to persuade people that Tommy Robinson has a point.