Yup. Back in the day everyone I know said that the Oneplus (and the Nexus line-up) were the Android phones to have.

I myself have a 6T but the way as the updates were taken care on it (we got Android 11 one year after being released and its buggy as hell) and the sudden change in policies makes them another brand trying to compete in the high price segment where other, more established brands own the market, including their parent brand Oppo.

Going by market segment in China (were I'm currently located - Hong Kong/Shenzhen) we have Apple on the top, Huawei dropped a lot after the US trade wars, to the point of their new devices being mostly dead in the water, Oppo and Xiaomi keep chugging along and then we have Samsung that for the lack of better terms don't leave the under 5% market share.