Incorgnito.

You can already do this yourself.

On a browser, go to Lemmy.world, log into your Lemmy.world account, go to your account settings, uncheck show NSFW content, check blur NSFW content, scroll down and hit the the save button and then logout. Whether or not the show NSFW content button is selected on the Voyager app is a moot point it will not override what is selected on your Lemmy.world profile.