> an express permanent residency in 10 days
This is false. Your source says it's for work permits. Though I still doubt IRCC would process an application in 10 days.
My wife and I have been US tech refugees in Vancouver after our US working permits were indefinitely held for security checks. We are targeting Canadian PR through Express Entry (EE) in case we are not able to return to the US. I have to note it's not a sure path to PR for US tech refugees.
EE heavily favors French speakers and workers with local education/working experiences, and penalizes "old" people above 30. It also subsidizes certain fields (healthcare, transport...) that's not favored by the market. If you can max French points and have a bachelors degree, you are in. If you are not in these favored categories, learn French (which a lot of new immigrants are doing) or wait for years to accumulate Canadian experiences (and hopefully the rule doesn't change).
We have masters and PhD degrees, my wife has gained 1-year working experience here, and we have maxed English scores, but we haven't qualified only because we entered our 30s.
PNP (provincial nominee) is a more guaranteed path to PR, but it requires company sponsorship and the chance still depends on your paid level and other factors. Our US employers view our relocation to Canada as temporary so they don't do it. The alternative is switching to a local position/company. But tech positions here in Vancouver are very limited (at least compared to US tech hubs). I personally don't really want to sacrifice the career just for immigration.