“Taxing at 100% also brings no tax revenue” is already a stupid statement, and is Tautologically contradictory
It’s not. If you work 40h per week and can do overtime but that overtime is taxed at 100% (because yes, that’s what marginal rate means, it’s the rate the extra income will be taxed), virtually nobody will bother doing that overtime. The handful who do will probably not clock-in because anyway, there’s no point since it will bring no income after taxation.