If a person wants to test a website using several accounts in Chrome, they need to open and manage several windows. Lame.

If a person wants to access an ad-ridden website using several accounts in Chrome, they need to install, configure and maintain all of their favorite ad-blockers and anti-tracking extensions in several Chrome profiles. Lame.

In my experience, people who prefer profiles over containers are mostly casual users who don't configure profiles and use maybe one or two extensions.