I'm not a hot keeper. No way do I have the courage to want to be one, lol.
But regarding your #2 question, your explanation makes sense. Also consider in factors like access and distance to the nearest medical center with available antivenin; mambas have a reputation to "bite first ask questions later maybe not" snake but the taipan has a good reason to be feared too; amount of exposure to the species, usually villagers and farmers; any protective gear used including boots, if at all, education for prevention and/or access to a snake catcher who can remove the snake safely before some unfortunate resident does; culturally or by tradition, are the snakes being sought out and hunted for food/medicine; how much antivenin is available at any time and is it affordable to those at risk; and how high of a population of the snake is found within human residence.
Access to antivenin and education on how to avoid encounters help reduce the risks. While a lot of nonprofits and other organizations try to help, if they don't have the community and government support, it will be challenge.