Despite what the #systemd #devs might think, "42% less #Unix philosophy" is an anti-selling-point.
"Replace #sudo with #run0, let systemd do it" - sure. Throw away a well-audited, widely-used codebase which has worked well for decades, and instead turn it into a request to a #PID 1 process that is a huge modular-but-#monolithic codebase full of constant churn which has barely been #compiled, much less #understood.
Dollars to doughnuts there are more root holes lurking in systemd than in sudo.