As if Guided by Voices weren’t prolific enough in their ’90s heyday, Robert Pollard has amped things up considerably in the 2010s. When that classic ’90s lineup reunited earlier this decade, they remarkably pumped out six new albums within a mere two and a half year period, while the current reboot of the 1997-2004 Doug Gillard era produced two last year, including sprawling double album August by Cake. A wealth of new material from a band we once thought were gone for good is something to celebrate, but there’s been an undeniable sense since 2012 that they’ve been spreading…