If accepting universals made one not a materialist, that would rule out some of the great Australian materialists, such as David Armstrong. Thus, that would clearly be a non-standard use of the label “materialist.” Perhaps there are details of Russell’s account of universals which are not shared by Armstrong’s which make it anti-materialist, but you don’t specify any. I know that Russell’s views changed over the years, which of course complicates things, but he certainly didn’t believe in spooky souls, and most of the doctrines of his I can think of which seem to be in possible tension with materialism are either susceptible to varying interpretations or matters he changed his mind on at different points or both.
Bertrand Russell wasn’t a materialist; he believed in Universals. I think you are confusing “materialist” with “people I agree with”.
If accepting universals made one not a materialist, that would rule out some of the great Australian materialists, such as David Armstrong. Thus, that would clearly be a non-standard use of the label “materialist.” Perhaps there are details of Russell’s account of universals which are not shared by Armstrong’s which make it anti-materialist, but you don’t specify any. I know that Russell’s views changed over the years, which of course complicates things, but he certainly didn’t believe in spooky souls, and most of the doctrines of his I can think of which seem to be in possible tension with materialism are either susceptible to varying interpretations or matters he changed his mind on at different points or both.