Yes, because StackOverflow is horrible to monitor.
I work on an open source project at $DAYJOB, and as a team it's much easier dealing with a forum or bug report than tracking SO questions.
You can't set up email notifications for watched tags [1] as SO doesn't take that use case seriously. There's no way to see read or unread questions, or e.g. mark them as read (personally or as a team).
To make matters worse, SO tags are often wrongly applied leading to seeing lots of unrelated or low quality questions briefly. These get removed eventually but still show up initially.
And lastly, I think SO has said that generally they don't want to devolve into a vendor support forum. Which is understandable, given that most companies just post boilerplate answers and aren't really helpful. As a company it makes things harder because moderation is completely out of your control.
[1] https://meta.stackexchange.com/questions/25224/email-notific...
> You can't set up email notifications for watched tags [1]
I'm quite sure I had that set up at some point, already many years ago. The thread you're linking to is over 15 years old.