Clarity-ferm beers totally not safe for Coeliacs, as you mention.
This is slightly more effort but also decent - Ground Breaker Brewing Releases Gluten-Free Homebrew Recipe — Ground Breaker Brewing
Clarity fermenter isn't safe for Coeliacs...I posted options for GF recipes and the link to research here: https://aussiehomebrewer.com/threads/gluten-free-beer.99031/
Short version is Clarityferm and other enzymes help it pass the gluten test, but don't necessarily remove the gluten. More...
It's up to you, but the science says it's not safe to give your coeliac family/friends ''gluten-reduced" beers -
https://www.forbes.com/sites/samlemonick/2017/11/01/a-new-test-to-make-sure-your-beer-is-gluten-free/#53f50cb91981
TLDR is your beer will pass a gluten test, but the gluten may...