Imagine you release a codec which optimizes for cis white male voice, every other kind of voice has perceptibly lower fidelity (at low bitrates). That would not go well...
What people have historically called a "gay lisp" is actually a hyper-articulation of /s/ or /z/, and as you might expect, /s/ and /z/ have a lot of high frequency sounds in them. Weird as it sounds there is a possible scenario where an audio codec does a worse job reproducing the audio content of gay male speech compared to straight male speech.
Questions of "which users can use my product and which can't" certainly encompass political views to be sure, but they also extend further beyond. I don't see why you feel the need to argue from the position of "woke devil's advocate" here.
For a politically-neutral example of why poor DEI practice can lead directly to worse products, see my sister comment about faucet sensors and black skin.