A comment commonly brought up here is if an employer has big brother software watching everything you do its a red flag and probably not a place one wants to work. You're essentially doing that to your kid. My kids are older but I don't monitor what they are looking at with software but I do ask what they're watching. At 10yo they probably just need supervision, not monitoring. I see those as different like I supervise employees doing work - check in on them, talk about how things are progressing, if there are barriers/issues, etc. Monitoring is more like automated micro-managing using time tracking.
Educating about having time for school and time for play/goofing off is important. I would suggest different device for the online goofing off or maybe a different login. Maybe even a different location in your house so its clear that its not learning time. Play screen time for us becomes an issue if grades are slipping then they get less play screen time. If they can keep up good grades and goof off in class watching minecraft videos, then so be it.