You're eating the onion. I could see some government agency deciding that they as an agency would standardize on tabs, though even that would be a stretch. But not the White House.
By adopting a tab-delimited approach to softwaremaking, ONCD is ensuring that the technical community’s expertise is reflected in how the Federal Government approaches these inconsistencies. Creators of software can have an outsized impact on the Nation’s shared security by factoring standardized tabulations into the development process.
For anyone who doesn’t want to read that whole thing.