client certs (from the time the article mentions) are supposed to be used for consumers, hence no fancy chain like you mention, which was intended for b2b.
for cliente using a browser, the site would provide the user once with much less overhead and costs and red tape, using it own cert/private keys, which do have the full chain. it was basically a better way to be always logged without forever plain text cookies, as we actually got. or even worse, baked in the publisher owned OS/browser as google mamaged to fool everyone into.
for cliente using a browser, the site would provide the user once with much less overhead and costs and red tape, using it own cert/private keys, which do have the full chain. it was basically a better way to be always logged without forever plain text cookies, as we actually got. or even worse, baked in the publisher owned OS/browser as google mamaged to fool everyone into.