That seems not to be entirely true. It can be seen that e.g. even when no dynamic routing protocol is configured, some of their processes run in the background.
09:15:52 route,rpki,debug stats roas 0 roa 0 nodes4 0 nodes6 0
09:15:54 route,debug,calc 1.3.3 Loading new prefix values
09:15:54 route,debug,calc 3 Main publish
09:15:55 route,rpki,debug wipe stats roas 0 roa 0 nodes4 0 nodes6 0
09:15:59 route,debug,calc 1.3.1 Tag updated routes for merging
09:15:59 route,debug,calc 1.3.3 Loading new prefix values
09:15:59 route,debug,calc 1.3.4 Merge route updates
09:15:59 route,debug,calc 2.2 Merge forwarding path updates
09:15:59 route,debug,calc 3 Main publish
09:15:59 route,debug,calc 6.1 Cleanup merge
09:15:59 route,debug,calc 1.3.1 Tag updated routes for merging
09:15:59 route,debug,calc 1.3.3 Loading new prefix values
09:15:59 route,debug,calc 1.3.4 Merge route updates
09:15:59 route,debug,calc 2.2 Merge forwarding path updates
09:15:59 route,debug,calc Prepare queued LINK/%*7/10-5/0/SRC192.168.188.1%*7
09:15:59 route,debug,calc Set initial reachability for interface LINK/%*7/10-5/0/SRC192.168.188.1%*7
09:15:59 route,debug,calc Apply reachability to LINK/%*7/10-5/0/SRC192.168.188.1%*7
09:15:59 route,debug,calc Resolving LINK/%*7/10-5/0/SRC192.168.188.1%*7
09:15:59 route,debug,calc 3 Main publish
09:15:59 route,debug,calc 6.1 Cleanup merge
09:16:01 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:01 route,debug,calc 1.3.3 Loading new prefix values
09:16:01 route,debug,calc 1.3.4 Merge route updates
09:16:01 route,debug,calc 2.2 Merge forwarding path updates
09:16:01 route,debug,calc 3 Main publish
09:16:01 route,debug,calc 6.1 Cleanup merge
09:16:03 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:03 route,debug,calc 1.3.4 Merge route updates
09:16:03 route,debug,calc 2.2 Merge forwarding path updates
09:16:03 route,debug,calc 3 Main publish
09:16:03 route,debug,calc 6.1 Cleanup merge
09:16:07 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:07 route,debug,calc 1.3.4 Merge route updates
09:16:07 route,debug,calc 2.2 Merge forwarding path updates
09:16:07 route,debug,calc 3 Main publish
09:16:07 route,debug,calc 6.1 Cleanup merge
09:16:07 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:07 route,debug,calc 1.3.4 Merge route updates
09:16:07 route,debug,calc 2.2 Merge forwarding path updates
09:16:07 route,debug,calc 3 Main publish
09:16:07 route,debug,calc 6.1 Cleanup merge
09:16:07 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:07 route,debug,calc 1.3.4 Merge route updates
09:16:07 route,debug,calc 2.2 Merge forwarding path updates
09:16:07 route,debug,calc Prepare queued IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Resolving IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc 3 Main publish
09:16:07 route,debug,calc 6.1 Cleanup merge
09:16:07 route,debug,calc 1.3.1 Tag updated routes for merging
09:16:07 route,debug,calc 1.3.3 Loading new prefix values
09:16:07 route,debug,calc 1.3.4 Merge route updates
09:16:07 route,debug,calc Need to update fwp link IP/192.168.128.1/30-10/0 via 192.168.128.0/24->LINK/%*1/10-5/0/SRC192.168.128.2%*1 FLD{0}
09:16:07 route,debug,calc 2.2 Merge forwarding path updates
09:16:07 route,debug,calc Prepare queued LINK/%*1/10-5/0/SRC192.168.128.2%*1
09:16:07 route,debug,calc Queue recursively updated IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Prepare queued IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Set initial reachability for interface LINK/%*1/10-5/0/SRC192.168.128.2%*1
09:16:07 route,debug,calc Apply reachability to LINK/%*1/10-5/0/SRC192.168.128.2%*1
09:16:07 route,debug,calc Propagate reachability for IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Apply reachability to IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Resolving LINK/%*1/10-5/0/SRC192.168.128.2%*1
09:16:07 route,debug,calc Resolving IP/192.168.128.1/30-10/0
09:16:07 route,debug,calc Resolved link IP/192.168.128.1/30-10/0 via 192.168.128.0/24->LINK/%*1/10-5/0/SRC192.168.128.2%*1 FLD{1} tr has metric BEST/24
09:16:07 route,debug,calc 3 Main publish
09:16:07 route,debug,calc 6.1 Cleanup merge
topis shoud log routing calculation. Is any calculation done for static routing configuration?