In the Blog post 'Mike B' says
"This week we reported to Apple a serious flaw in macOS that can lead to data loss when using an APFS-formatted disk image. Until Apple issues a macOS update that resolves this problem, we're dropping support for APFS-formatted disk images."
Then he goes on to say that it only affects 'Sparse' Images.
Then at the bottom he says (who reads down that far these days eh?)
"Until Apple resolves this disk images bug, we strongly recommend that people avoid using APFS-formatted sparse disk images for any purpose with any application."
He's got all the clicks and promotion of his product by the first paragraph.
He could have said "we're dropping support for APFS-formatted Sparse disk images." (my ephasis) but the headline writers may well have passed over it and therefore he'd not get the Interest in (a.k.a. clicks) his product.