Wrong. It doesn’t support yet
Yes, you are right, while adding images in Lightroom mobile it will convert the HEIF images into jpeg format so that you can at least edit your images. Our team still investigating a fix on this issue. You can follow the above feedback link for more updates.
Yes but surely you have known about this file type for some time. Meanwhile, more and more users sail away from Adobe Island. It really is appalling.
That's not really true... According to the most recent (record) Creative Cloud adoption numbers, more and more users actually continue signing up.
That is a separate issue from full HEIC/HEIF support, of course. But no use in conflating the two topics.