What’s with all the schisms lately?

As a newly convert, I haven’t noticed before about all the orders such as SSPX and Sons of the Holy Redeemer rejecting the current Pope or the results of Vatican II. However after receiving full communion with the Church, I can’t help noticing all the rifts between the different orders. Is this just normal or has it escalated recently? I don’t understand if an order is going against the Pope’s decree or what the Church as a whole agreed to, why haven’t they been excommunicated by creating a schism?