There are quite a few interesting things in that EtreCheck scan.
First of all Alipay appears to be crashing very regularly. If you don't use it I'd remove it completely. If you do use it, I'd remove it and reinstall it.
Given that the problem only appears within your own account I'd focus first on the items that are set to run within your own account rather than things that run under all accounts. One that stands out is AirServer. That could be something that is loading into the WindowServer and resulting in these CGContextErase messages across all applications. I'd recommend removing that and seeing if the messages cease.
If that doesn't resolve the problem I'd try removing other extensions, one or a few at a time, until you find the culprit. Starting with the ones you don't need or ones that hook into the system in a significant way (Default Folder X is another example). Given that you don't see the problem in another account, you could also try running EtreCheck under another account and comparing the two results.
Something else that might help locate the culprit is selecting one of the affected processes in Activity Monitor, then clicking on the Info button and selecting the "Open files and ports" tab. This should list everything loaded into that application and perhaps something will stand out.
Let us know how you get on.