Absolutely. Though IIRC this leak is 6 years old and has already been reasonably well-studied by a lot of very smart people. I don't think any of these were technically even "zero-days", and I'd expect windows/linux to be patched against them now.
Even at the time these wouldn't have been as severe as "only run on an air gapped computer and burn the computer afterwards". That type of technology wouldn't be part of a leak like this, but given the amount of undocumented opcodes in various silicon (processors, BMC, TPMs, etc) I wouldn't be surprised if it did exist.
since these things seem to target individual applications - is this an argument that security through obscurity i.e. writing your own (shitty) servers and such has a security benefit?
Equation Group was discovered & named in 2015 by kaspersky due to their pervasive use of encryption, kaspersky identified them as actors related to the people who produced stuxnet and flame (which also implicates regin).