So if you want to talk about the consequences of interstellar beaming to the novelverse, it should be a conversation about the ramifications of "Bloodlines." This has been a potential issue for 19 years now; it's just that nobody really opted to address the issue because "Bloodlines" wasn't all that memorable an episode.
Not just "Bloodlines" - we also saw Dukat make use of a subspace transporter to move Kira from Deep Space Nine to Empok Nor in "Covenant." I'm not sure if it was established to be Dominion technology or not there, but I know it was established as Dominion technology when it was re-used in Fearful Symmetry
to transport Dukat and later Iliana from Letau to Harkoum. It therefore also stands to reason that it was the same technology that beamed Eris away in "The Jem'Hadar."