Just the facts ma'am, just the facts
Yes they do as they are the lowest point in the -10 fuel system.
Based on the info from TC, for the need for a gascolator with or without the exemption is dead as long as you have a serviceable fuel filter and a drain at the low point of the fuel system. In the case of my -10 I will have filters in each wing root as well as one after the fuel pumps. All all easily serviceable.
My fuel tank drains are the low point in the fuel system.
RV10 C-GCWZ - Sold
RV10 C-GROK - Nearing completion