Can a validly baptized non-Catholic commit mortal sin, thereby losing the state of grace?

Since some non-Catholic baptisms are valid, and thereby remit original sin and confer sanctifying grace, there would therefore be some non-Catholics who are in a state of grace. Cf. https://christianity.stackexchange.com/questions/54951/do-the-conditions-for-mortal-sin-apply-to-non-catholics and https://christianity.stackexchange.com/questions/58998/how-can-a-non-catholic-get-into-state-of-grace-as-understood-by-the-catholic-chu I ask this question, because it is not quite answered in either of the linked questions. Note that this question is not not asking if a non-Catholic can commit a *grave sin,* but rather if such a person can fulfill the other two conditions required to lose the state of grace, namely 1. Full advertence [attention] on the part of the intellect 2. Full consent on the part of the will [1]