Yes, including the 18-karat gold model.
https://www.engadget.com/the-original-apple-watch-lineup-is-officially-obsolete-083825819.html
Apple Watches aren’t the only option, and watches don’t just go “obsolete” like they’ve gone out of date. Just because they don’t get more support doesn’t mean they’re unusable. This article is literally about how an almost decade old product still had official support until now, and it’s going to still be a usable product for years to come if you’re willing to put up with the slowness inherent to the first gen (seriously, 2nd or 3rd series and onwards watches could easily last over a decade or more)
Also, this criticism applies to smartphones too… but it doesn’t mean (most) people abandon their smartphones and use a Nokia 3310 for their multiple week batterylife over one that needs to charge every/every other night. The tradeoff of charging is offset ten-fold by the slew of useful features.