Yes, that is correct. Discrimination is already illegal in hiring. Spelling it out so absurdly verbosely is just virtue signalling. If you're a remote developer, nobody cares about your colour or sex. Except at Mozilla, where people have their pronouns in Bugzilla.
To be clear, I fully support the right to be and feel and think whatever you want, but don't expect me to care about it, and this endless signposting of identity is tiresome.
You say you don't care about these identities, yet you’re willing to let a tool you (presumably) value lose funding over a text block you find 'verbose.' It seems you care enough about the signposting to let it outweigh the software's actual utility.
get over yourself
By that reasoning, nobody would engage in discriminatory hiring practices (or indeed discriminatory behaviour in general), because it's against the law. That is clearly not the case.
As such, I really don't see why you have a problem with Mozilla making their position on this matter crystal clear. Do you really consider reading a few extra words that much of a hardship?