I agree. Some biblical examples were quite extreme, including superpowers. Some seem to be cases where there is a medical explanation.
I have sometimes wondered how easy it would be to identify a demon-possessed person today?
I have not seen a single case that would resemble the extreme cases in the Bible. Once I saw a strange case but even that was probably just some rare mental reaction to the presence of praying Christians (the person was a non-Christian), No superpowers etc. but the life of the person changed totally when the Christians prayed for her while the person was in that strange state. Probably someone of the Christians also commanded in the name of Jesus (it happened many years ago so I don’t remember the words that were used). She became a believer, told to her non-Christian relatives about Jesus and invited them to see how she was baptized; in that culture leaving the other gods(idols) and being baptized is the critical step that may lead to persecution.