The Apple watch (or Android or WearOS based watches) are scaled down phone chips, see e.g. https://www.notebookcheck.net/Apple-S7-Processor-Benchmarks-and-Specs.575945.0.html - 1GB RAM, 32GB flash, dual core CPU running at 1.8GHz.
Bangle 2 is 256KB of RAM, 64MHz CPU, 8MB of flash - that is 4096 times less RAM, 30 times less CPU speed . You basically expect different class of device than Bangle 2 is and are willing to pay premium price for that. There are also people that are not buying Bangle 2 because current price is already too high.
If someone needs a minimalistic Open Source watch, at the cheapest price, then this is PineTime, with all their limitations.
Well Pinetime is previous generation (like Bangle 1), I was actually thinking Bangle 2 is current generation of minimalistic Open Source watch.