I'd have to agree. But nobody likes the "times" syntax (apparently), and having Nasm zero-fill "res?" in a "bits" section is *usually* what's intended...
Confine the use of "resb" (and friends) to your .bss section, in ".data" use "times N db 0" ("times" is quite flexible, and can be used for more than "zero-fill"), and Nasm will "shut up and assemble"...
The warning is not "suppresible", and isn't about to be made so - as nasm64developer says, it really should be an error. (but I'd favor leaving it as-is)
Best,
Frank