Jolla has spent years disparaging projects based on the Android Open Source Project (AOSP) for marketing. SailfishOS has a largely closed source user interface and application layer with no equivalent to the open source AOSP. It's far less private and secure than AOSP or iOS too.
Jolla recently launched a new product so their supporters are understandably trying to promote it. As part of that, they've been posting about it in replies to posts about GrapheneOS. We've replied to some of it with our perspective within threads originally about GrapheneOS.
If you have a fediverse account, you can quote this note from your own instance. Search https://grapheneos.social/users/GrapheneOS/statuses/115698189390820019 on your instance and quote it. (Note that quoting is not supported in Mastodon.)