Question... who wrote this??
80-85% of Muslim women are unable to live as devoted Muslims???!! Where is that statistic from??
I think that we should be really careful about saying certain people are not considered Muslim anymore and that the marriage contract of a woman becomes invalidated!!!
Just because someone doesn't pray out of laziness or doesn't do the other things does not take a person out of the fold of Islam according to most scholars. Obviously it's not the best situation, but I don't think anyone should be going around telling women their marriages are no longer valid because their husbands are not as practicing!!!
Everyone's Imaan goes up and down in life, and YES we all have not so practicing family members, even those who question Islam and have doubts and whatever, but we should not cut off ties with them. It doesn't mean they have become kaffirs or non-Muslims. How can we make this decision for someone else, are we able to open up their hearts and see what their faith is? Obviously, not. Even those with non-Muslim families should not cut off family ties which is a major sin in Islam.
It's good not to let them influence our own faith and practice and surround ourselves with devoted perfect Muslim friends and spouses only etc, but such an ideal situation rarely exists. In fact, we are not so perfect ourselves.
Also about determining what is right and wrong from Iman. This only applies to scholars. A lay person can't go and say 'Oh I think that taking interest is OK since I'm not hurting anyone", "In my heart I feel it's ok to sell alcohol". A Muslim has to go back to the texts, what does the Quran and Hadith say and the words of righteous scholars with Iman to help guide us in these matters.
Lastly the reason why we learn Islam is for our own selves, to save our own self from Jahannam and enter Jannah. That's the main reason. It's not true that this goodness is of no value unless it benefits others. The main reason is NOT benefiting others. The best utilization of goodness is for each person to practice it themself first.
Allahu alam if I misinterpreted the shaikh's words and he meant something else, and Allah knows best.