Personally, I believe Fr. Jonah is right on target. I only wish I could have gone to hear him when he was in Bozeman in February of this year to speak on monasticism.
Fr. Jonah has some very good points. He is warning against prelest and pride and recent converts who think they know everything and judge those who don't do it the way that they think it should be done. He warns against the pride of thinking that a mere priest could not be the spiritual father that you need. I have heard too many people who talk about their quest to find the perfect spiritual, father. Fr. Jonah has probably heard way too many people talk about finding a spiritual father worthy of their obedience. I think he's right that a real spiritual father would deflate him in a hurry. I know I've heard many people on the internet talk about their quest to find the perfect spiritual father. I've also heard many priests on these boards and lists warn them that this can be fueled by spiritual pride, and the reaction that this usually gets. I think the operative thing that opens the mouth of the teacher is our willingness to hear and to obey. If we're at that point, then God can use anyone, including a "mere" priest or the worst sinner, for that matter.
Personally, I'd stay away from a "spiritual father" who thinks of himself as a great spiritual father, because true spiritual fathers are very humble and don't tout themselves as great spiritual fathers.
I don't believe that Fr. Jonah puts down monasticism at all. He just points out the fact that life in a monastary and out in the world (which would be most parishes unless you attend church in a monastic community) are two different things and that there are different standards for each. And that is traditional in the Orthodox Church. There are different expectations in parishes than there are in monasteries.
Also, I can guarantee you that Fr. Jonah's bishop, His Grace +Bishop TIKHON, is very conservative and traditional (which I'm thankful for--I have tremendous respect for him). Fr. Jonah took over as abbot of the monastery after His Grace, +Bishop NIKOLAI was elected to the Episcopacy (sp?). Having met His Grace, +Bishop NIKOLAI, a couple of times the week before his election, he is a very holy person, and I bet is and was a great spiritual father. I think it meant a lot for him to visit the parishes here in Montana, since this is where he was born and raised. The first time I met him he scared me to death. When he looks at you, he sees right into your soul. However, if you make eye contact with him (as I did later that night), then you see the kindness and compassion in those eyes. He has tremendous humility as well.