Someone with twice the total amount of hair (follicle # * hair length) will take approximately twice as long to achieve the same level of greasiness. This is holding "hair oil"/sebum production fixed. Sebum is produced in the scalp, which is why bald people still have shiny heads. If anything, men with more hair produce less sebum, since overactive sebaceous glands are caused by the same hormone which causes hair loss (DHT). Lucky people like you generally produce less scalp oil
and that oil is distributed over a larger volume of hair. Men experiencing hairloss can take finasteride to reduce their DHT levels and simultaneously reduce/stop hairloss and excessive sebum production. Material side effects are rare, and reports of persistent side effects are extremely rare, but of course it warrants a discussion with one's dermatologist.
The preponderance of unsolicited advice is to lay off the product, when that is the worst advice for the people who need the most advice.