This parallel didn't occur to me too; Saratt is a symbiont and the ship is his host.
Saratt trusted the doctors, who did that to him, too. Where this trust took him--we can see. Why he is in such a state...stand by for the next chapter
I'll just reveal there is a difference between him and the man in the engineering.
In a Cardassian library
or in a Cardassian gallery
"Reagan, it appears, is really only an ardent unionist if the unions in question are in Poland" - Stephen King, Skeleton Crew