[danpalmer]

My understanding is that DMA prevents tech companies considered to be too big from sharing data internally in certain ways without opt-in (among other things). When this comes into effect, a website stops ranking as well.

Is one explanation of this just that search was using a data source for relevance that benefitted this website, and now they are not using that? That seems possible, and doesn't require an assumption of malicious intent.

Disclaimer, I work at Google, but not on anything related to this. This is just armchair speculation of an explanation that might fit.

[dotnet00]

The post from Tuta did speculate that given the timing, the issue may be related to DMA changes. The issue is that they can't even reach a human at Google with authority in the associated systems to understand the issue.

[danpalmer]

Their speculation seems to be that there is some maliciousness or intent here, rather than a natural result of the DMA changes. My point is that it could be the latter.

As for reaching a human, my understanding is that Google does not discuss ranking reasons with companies on purpose, in order to prevent bias and gaming of the system.