Watching Christians argue over whether Provisionism (not to mention the somewhat related “Arminianism” perspective) is right or wrong is both amusing and sad at the same time. Because yes, while Scripture does indeed teach that both Provisionism and Arminianism are wrong, it also teaches that Calvinism is equally wrong.
Ultimately, both sides need to reject their soteriology and embrace a truly scriptural soteriology, sometimes referred to as “Concordant” soteriology. Here’s a good starting point: Biblical Universalism