It’s technically octopods

This is true for the scientific sense that it’s order Octopoda (e.g. the plural for members of Hexapoda is “hexapods” and “decapods” for Decapoda), but then it’s kind of like saying the plural for “lobster” is “nephropids”. The names are close for Octopoda and octopus, but it’s still taking the colloquial name and pluralizing it into its scientific name. I think it’s a reasonable alternative since it’s so close, but it’s not specifically “to bring it in line with cephalopod”; that’s just how pluralization of taxa ending in ‘poda’ works generally.