Check again - it got a serious makeover recently. It's still far from intutive, but so much better than it used to be.

It's a power user tool that has a slight learning curve.

Gerrit is a code review tool first, with code browsing not being a core focus.

GitHub and others are frequently code browsing tools first, with code review coming second. "Code hosting has look like GitHub" is unfortunately a common myopia.

Phabricator (from the little I used it) seems closer to Gerrit than other code hosting.