The problem is with the mega owners that claim distribution rights over thousands and thousands of films that they acquire in bulk for very cheap
A lot of these acquisition companies are from countries that normally couldn’t assert global ownership but thanks to YouTube, they are local distribution becomes global rights, as there are a number of distribution companies from many countries￼that could theoretically assert infringement, and I think youtube can’t be bothered to parcel out which countries
so if a little dvd pressing￼ Company acquires a few thousand obscure films in order to sell them for a dollar in bargain bins, suddenly they have the power to assert copyright globally.
I had the same thing happen with an Indian movie that I used for some computer graphics experiments.
I thought it was relatively obscure and it was up for a few years, but suddenly I got a strike for it back when they did the strikes￼￼￼￼