robot system tests continues after failure, even if failure means additional tests will fail or are meaningless

In the following example, the test fails authentication but continues to authorize the subscriber. these tests are really a single use case where each step builds on the other. Would it be better to fail everything after the first fail?

robot -v ONOS_REST_PORT:8181 -v ONOS_SSH_PORT:8101 --exclude notready --critical sanity -v num_onus:1 sanity.robot
==============================================================================
Sanity :: Creates bbsim olt/onu and validates activataion Assumes voltha-go...
==============================================================================
Activate Device BBSIM OLT/ONU :: Validate deployment -> create and... | PASS |
------------------------------------------------------------------------------
Validate OLT Connected to ONOS :: Verifies the BBSIM-OLT device is... | PASS |
------------------------------------------------------------------------------
Check EAPOL Flows in ONOS :: Validates eapol flows for the onu are... | PASS |
------------------------------------------------------------------------------
Validate ONU Authenticated in ONOS :: Validates onu is AUTHORIZED ... | FAIL |
Keyword 'Verify Number of AAA-Users' failed after retrying for 1 minute 30 seconds. The last error was: ' 0' does not contain '1'
------------------------------------------------------------------------------
Add Subscriber-Access in ONOS :: Through the olt-app in ONOS, exec... | PASS |
------------------------------------------------------------------------------
Validate DHCP Assignment in ONOS :: After IP Flows are pushed to t... | PASS |
------------------------------------------------------------------------------
Delete Device and Verify :: Disable -> Delete devices via voltctl ... | FAIL |
{{Keyword 'Validate Device Removed' failed after retrying for 1 minute. The last error was: [ 7b34f014f750be39b2019740 ] contains value '7b34
------------------------------------------------------------------------------
Sanity :: Creates bbsim olt/onu and validates activataion Assumes ... | FAIL |
7 critical tests, 5 passed, 2 failed
7 tests total, 5 passed, 2 failed