If you think about it, sinless perfectionism heresy is another repackaged version of repent of sins salvationism:

Sinless perfectionism salvationism heresy demands that people either never sin throughout their whole life and/or stop sinning to be eternally saved.

Meanwhile, repent of sins salvationism involves the same exact thing, but reworded in different and still heretickal rewording of "repent of sins/turn from sins/you stop your sinning/sins" to be saved.

Both are horrible, wicked, unbiblical nonsense and abominations, and are the same repent of sins salvationism heresy.