When we create an object of type SimpleBrokerQuery see below: https://github.com/sdl/dxa-web-application-java/blob/05cb742c88d819310ee029702f440ee2ecf45c4d/dxa-framework/dxa-common-api/src/main/java/com/sdl/webapp/common/api/model/query/SimpleBrokerQuery.java#L12 we pass in keywordFilters. This keywordFilters are not used to build the inputItemFilter in graphql query provider(https://github.com/sdl/dxa-web-application-java/blob/05cb742c88d819310ee029702f440ee2ecf45c4d/dxa-framework/dxa-tridion-provider/src/main/java/com/sdl/dxa/tridion/broker/GraphQLQueryProvider.java#L91) In earlier implementation (non GraphQL implementation) keywordFilters were used and it was able to get component filtered by keywords, more info :https://github.com/sdl/dxa-web-application-java/blob/05cb742c88d819310ee029702f440ee2ecf45c4d/dxa-framework/dxa-tridion-provider/src/main/java/com/sdl/dxa/tridion/mapping/impl/DefaultContentProvider.java#L282