Symbolic decolonization is useful, but it is also useless without material decolonization. The point of decolonizing the mind has always been in the service of material decolonization, in the same way that black consciousness in South Africa was not an end in itself but a necessary step in the struggle against apartheid.
Therefore, yes, let us decolonize the universities but let us also make sure that they are paying their fair share of taxes in the towns and countries they are in. Rename the streets, but also struggle for economic justice—that means calling for redistribution of wealth.