Would be a terrible shame if lots of people opted out.
If you are a EU citizen you might also want to write a complaint to privacy@huggingface.co because they are collecting your personally identifiable information in machine-readable form which they are distributing to third parties.
I did it to invite collaboration and connect with other developers with similar interests. FOSS is more about building communities than building software, after all.
I did not anticipate that it could be (legally) used to dismantle the kinds of communities I wanted to build. (I did anticipate that it could be illegally used to that end, but historically that has tended to cause a Streisand Effect, so that risk seemed worth it.)