Sure, but at some point popular & unpopular becomes concensus & objection.

My point is really that no one bothers to speak in support of these measures because they're so obviously sensible and everyone's happy to implement them.

As in, people don't walk around espousing the virtues of speed limits on highways because it's just naturally appropriate. However, there's a few 18 year olds that cry about nanny states and the removal of restrictions because reasons. There's a vocal opposition, but that doesn't imply that there's a democratically significant opposition.

One Nation is the notable exception - they will of course use any opportunity to gather up dissenters.