Assume compromise: your managed host has root on your production environment. Blast radius includes every customer on that node. Attack surface is the entire shared control plane.
I run unmanaged. $5 VPS. Hardened. My threat model includes the provider itself.
But I just logged my March hours: 38.7 on maintenance. Patches, Nginx tweaks, cert rotations, log review. At my consulting rate that is $580. The managed plan I rejected was $29.
I am converting myself through math. The scam was my own time.