For archival media, being slow isn't a huge problem. You archive it, and, eventually, read back a little of it. When the time comes to migrate to a new format, you read it once more. Being slow also means it takes a while to overwrite it fully. And, if LTO-10 is not big enough, you can go with IBM 3592. If your tapes never leave the tape archive, who cares what is the shape of the cartridge you are using?
I also have a disturbing impression Microsoft has sprinkled magic AI dust on project Glass so that they could check that box. One can only hope it doesn't hallucinate your backups.
For archival media, being slow isn't a huge problem. You archive it, and, eventually, read back a little of it. When the time comes to migrate to a new format, you read it once more. Being slow also means it takes a while to overwrite it fully. And, if LTO-10 is not big enough, you can go with IBM 3592. If your tapes never leave the tape archive, who cares what is the shape of the cartridge you are using?
I also have a disturbing impression Microsoft has sprinkled magic AI dust on project Glass so that they could check that box. One can only hope it doesn't hallucinate your backups.