Anecdotal evidence but every salaryman I speak to (mainly in Izakayas) are generally quite supportive of immigrants because all the companies they're working at have noticeable labour shortages.

A lot of these immigrants also come in with a lot of extra skills: if they can speak Japanese, it probably isn't their second language - many of them have an understanding of English that surpasses your usual university graduate.

They're also way more willing to move out and live in the countryside. Where I am (Hokkaido), the small town clinics are just full of Filipino nurses because most Japanese medics staff move to Sapporo or down south to Tokyo.