But only the Roman Catholics have a convoluted, bureaucratic process for determining who is a saint.
As commented earlier, not sure about on your side of The Pond, but here Methodists (who are now mostly in the UCCan in Canada) and Reformed Churches don't canonize people, they stick to established saints like the Evangelists, Apostles, and Church Fathers. I went to Saint James-Rosemount United but we did not celebrates James (the Apostle James, IIRC) in any meaningful way.
And the Eastern and Oriental Churches, as I understand it from some reading I did at the beginning of the thread, it's determined by local bishops and congregants, not a centralized hierarchy.
And when Protestants celebrates All Saints Day (to be honest, I don't know many that do), they are celebrating it in a more generic sense, not the specific, church canonized sense.
So a lot rides on what you mean by "saints".
For instance, to most Protestants (the Anglicans/CoE might be an exception, I forget), there is no canonization process or intercession. "Saints" are simply people who were foundational to the church or, in a more generic sense, people who live lives of faith and work for the cause of God/Christ. No prays to/thru saints. No one canonizes recently deceased people as we saw with that teenager in Italy. Basically, if a church or person sees someone as "saintly" then they are a saint to that person/group.
So Jim is quite correct. You are conflating the RC understanding of sainthood as a specific title that is based on miracles and "proof" requiring adjudication with the more generic understanding of "saint" that many in the Protestant world follow.