I don’t check any of that in detail. I do care if anything that needs to be done regularly takes a lot of time, as with time it’ll eventually be easier to skip it and I hate that. Also I don’t think it’s that good if you have to disassemble a lot of plastics every other oil change, the GS is great for checking valves, 10 minutes of labour to get to them. Also the clutch, but everything else is a faff.
Here there are a lot of Africa Twins and other parallel twins that never had valves checked as it’s such a long process to just get to them. I hate that.