Earlier quoted context omitted.
Perhaps, but it's worth noting that Chrome became the dominant browser on Windows even though Internet Explorer/Edge is the default browser and comes preinstalled.
Because it was helped by already nearly ubiquitous Google search shoving it down everyone's throat on every page And then ubiquitous Youtube dealing the killing blow: https://arstechnica.com/gadgets/2019/05/ex-youtube-engineer-...
Your article says that Microsoft themselves were working to move people away from Internet Explorer 6 and encouraging people to upgrade to a modern browser by declaring IE 6 to be at its end of life.
The article says that Youtube displayed a banner recommending users to upgrade to either Firefox, IE 8, or Chrome and that due to concerns by Google's lawyers, the order of the browsers was to be randomized so to avoid the appearance of giving undue prominence to Chrome. Finally the article ends by noting that each of the three options Youtube recommended were chosen equally as opposed to Chrome being the option picked by most people who saw the banner.
This sounds like the exact opposite of shoving it down peoples throats and instead trying to be very careful to move people away from a browser that Microsoft themselves had declared was dead, and onto an alternative option by trying to be as fair as possible.
The significance of your article isn't that Google shoved Chrome down everyone's throat in order to kill off a competitor, it's that due to its popularity and dominant position, Youtube was more effective at getting people to stop using Internet Explorer 6 than Microsoft was, but both companies had the same objective.
Here is an article about Microsoft's own "Friends don't let friends use Internet Explorer 6." which discusses Microsoft's own efforts to get people to stop using IE 6. It's about the same period of time as the article you mentioned.
https://www.zdnet.com/article/microsoft-friends-dont-let-fri...