There is a UC Irvine, I believe. If you think Berkeley is old and run down you should see some of the eastern cities which are even older.
Maintenance of roads, buildings and the “homeless” all takes money and you may have noticed that no one wants taxes raised for any reason, not for infrastructure and certainly not programs for the poor. I don’t know what your major is but perhaps you should look into City Planning and make a positive contribution rather than coming to our city to point out what is wrong with it as if we haven’t noticed.
BTW, what is Irvine’s policy regarding the homeless?