Leverage is great if you are completely off the grid as in crypto in a cold wallet. The debate is more about what size your account is and how much you need to live off.
Once again it matters where you live and how much money you need. If you have a small account, live somewhere you can live off $10 a day
That does not make sense to me. I would agree using higher leverage takes better management skills, but returning any gain is a feat in itself.