I was a member of STS and I can say crowdsourced translations were a million times better than the now-paid translation teams Valve hires.
And yes, while it was mostly "unpaid", during my time there (2016-2020), we had a year-end rally every year which the "fastest" teams to complete translations would receive Steam wallet codes for their effort. I received up to $350 the first year of rally.
The next year they gave us Artifact keys...
and then the one Valve employee managing the server left Valve, and STS was slowly being replaced by Crowdin
they essentially killed crowdsourcing starting with Artifact. We (the STS members) had no access to new strings, then came Underlords, the new client... Only TF2 translations are crowdsourced to this day. The rest are done by their external teams.
