I bought OnePlus 6 way back in 2018, and still using it as my primary phone. I didn't buy another second smartphone til 2020, or didn't upgrade OnePlus 6 as my mobile photography goes pretty fine with OP6. Yes I bought few lens as add-on and they just enlarge the vision of two cameras of OP6.
As days go by, I must say OnePlus has been able promote themselves as a global company with a market in US - thanks to their Android fork, OxygenOS.
In the of June '21 we got the news of merger between OnePlus & Oppo. This is a kind of shock to many OnePlus fanboys - kind of insecurity feeling was propelled among them. Soon after the merger, it's been announced that OnePlus will be a subsidiary of Oppo but will act independently. And we also came to know that the source codes of the OxygenOS and ColorOS will be merged.