I assume it is. It's on the ILC 2022 site where they are presenting. You can see the poster session listed and it looks like the abstract just posted (I've been checking regularly since someone shared the site when the poster session was listed).

Here is the link to see both:

https://events-program.easl.eu/ProgramSearch/...ogin=False

And here are the listed authors (including our SAB member who will be presenting)

https://events-program.easl.eu/ProgramSearch/...ogin=False

If it's not authentic please let me know but it's on the site for their conference so I assumed it was legit.