If you aren’t convinced by the moral issues or ownership disputes, consider also that as recently as 2017 .io has had significant DNS outages affecting domain r

If you aren’t convinced by the moral issues or ownership disputes, consider also that as recently as 2017 .io has had significant DNS outages affecting domain resolution. It seems the current operators have moved the root zones to more reliable providers since but if ownership of the domain is transferred in the future then that is subject to change.