> agree on the bigger desks bit, but what difference does a 12" tall barrier make?
It keeps your neighbor's shit from spilling over onto your desk, necessitating an awkward conversation (at the minimum). It also gives you a surface to attach taller, jury-rigged barriers, if you're so inclined.
COVID? Not a lot. But normal office work? Just a little bit of privacy. Enough so that casually glancing at what someone else is doing is discouraged. But also, not enough so that communication is too discouraged.
Most modern tech companies have a single height-adjustable desk per person, so most of the time your desk will be slightly higher or lower than your neighbour's.
All the tech offices I have worked in or visited for Meetup groups are long shared benches. How much linear space you get depends on how fast the team is hiring, whether there are interns right now, etc.