Just to fight the undeserved stigma that Feral has: nothing is wrong with it per se. There are certainly still some problems - see e.g. My Feedback for Feral Shadowlands/Dragonflight or https://eu.forums.blizzard.com/en/wow/t/feral-feedback-consolidated/161093 - but mostly Feral looks to be somewhere between decent and good regarding Shadowland PvE.
TLDR: No need to kick Ferals from your M+ group.