Why are people making a huge deal out of this? Win10 was released in 2015, and support ends in 2025. That's 10 years of support, I don't think this is unreasonable for a consumer product by any means.
As far as industry goes it's a bit short, but nothing catastrophic. There's plenty of xp machines still running just fine in many places. Lack of security updates is less crucial for most of these applications since they're often not required to be connected to internet.