I wouldn't say it's unusual for SaaS offerings to be semi-opensource; the commercial vs opensource markets do diverge in needs and there is non zero risk in making >95% of your marketable advantage open source.
Regarding it's current, although waning, top choice for hosting open source software, I certainly do think we are starting to see the trade offs the open source community has been making.
There are tons of hosted GIT solutions. I've started using sourcehut [1] which seems like an rising platform that is also opensource. Hopefully youtube-dl ends up there instead of risking it on another big provider.
Regarding it's current, although waning, top choice for hosting open source software, I certainly do think we are starting to see the trade offs the open source community has been making.
There are tons of hosted GIT solutions. I've started using sourcehut [1] which seems like an rising platform that is also opensource. Hopefully youtube-dl ends up there instead of risking it on another big provider.
[1] https://sr.ht/