That was my same thought! Brands I have never heard of that can't make a call, send messages or add a reminder popping up like they invented sliced bread.
We get it, some people don't want to charge a watch even though they have to regularly charge their phone, headphones, laptop and maybe car. Such a weird flex that a watch lasts an extra few days, who cares?! Charge it while you shower and you're good to go
Those are Apple-imposed limitations. The EU just forced them to open that part up recently.