Pretty much. I spent a year of my life maintaining a web app written in C circa 2002. Even then, it was a supreme pain as compared to Perl or PHP.
When I look back I've got to be honest and say that it was actually a thing of beauty. The heavy lifting required for some core functions was quite bad but the whole thing pales in comparison to some of the enterprise and microservice based c# behemoths I have looked after since which require literally hours of head scratching to deliver a simple change.
I'd rather spend that time writing C than scratching my head. I'd have a lot more hair now.
However in our case only the DB drivers and Apache TCL module were written in C, everything else was pure TCL.