With all due respect, 20d35de3 and 5856ca24 were not the proper changes to effect #856324. As a result, many piuparts tests against "unstable" are no longer being reported. Also, for some reason, the tooltip information has been truncated (the reason I am here).
The right way to incorporate sid-strict into "overall" DDPO results is to include it upstream.
Which, BTW, is already the case , and has been for years (since well before this bug report) (edit, this is wrong). You can verify this by looking for URIs in https://piuparts.debian.org/summary.json including "sid-strict". You'll see that right now there are many reports of packages showing as blocked in the overall report as a result of sid-strict.
The implicit claim in #856324, that sid-strict results were not being reported in DDPO, is false.