The fact that the problem is acknowledged attracts some people.

The "problems" the fascists claim to address are often fabricated by, or exacerbated by, the very same fascists. Small boats: irrelevant. Sharia-law-controlled no-go zones: fiction. Immigrants taking yer jerbs: a malicious lie. And the underlying reality is that all those "issues" are racist dogwhistles.

It's a fallacy to assert that gullible, low-information, brainwashed voters believe what they do because of legitimate grievances. They parrot what they're told, and don't have the critical thinking abilities needed to realise that they're being manipulated.

Fascists don't get in by telling the truth on behalf of underserved groups. That's their narrative, but like all fascist narratives, it's a self-serving lie.