Ok, it seems to me that you’re pooh poohing his opinion by saying; “that’s his opinion”. If not, what do you mean by that? Do you have an opinion from a reputable source that agrees with you?

Ok, Stubborn, so can you finally admit that Sedevacantism and 'loss of membership' is not wrong.  It's a valid theological opinion.

You can follow Suarez all you want (nobody is stopping you) but also remember, that Suarez is just an opinion as well.

If both sides of the aisle (R&R and Sedeism) would remember that IT'S JUST AN OPINION, then Tradition would be better off.

But if both of you (and many others) go back to the tired, old, worn-out arguments of yesterday and start arguing as if sedeism is the ONLY answer or that a pope can NEVER lose office, then Tradition will stay fractured.

We all have to do better.  We're in an unprecedented crisis.  ONE SIDE OF AN OPINION, OR THE OTHER SIDE, IS NOT GOING TO SOLVE IT.  40+ years of debating has proved that...

Here is the problem, Suarez is talking about excommunicates in general. All (manifest) heretics are excommunicated and separate themselves from the Church by their heresy and thus cease to be members of the Church, but not all excommunicates are heretics and thus can still be members of the Church.

Excommunication does not necessarily render one a non-Catholic and outside the Church, but (manifest and pertinacious) heresy does put the heretic outside the Church. Excommunication is a medicinal penalty imposed by the Church to encourage the miscreant to reform his ways and to repent.