I agree and have been led by the Lord to judge it as not of Him as God is not the author of confusion.I'd be very leary of being slain in the spirit or holy laughter.
However, they see these events as also a filling of the "Holy Spirit" for why they invoke the Holy Spirit to come & fall on them in worship.
This is why clarity is needed for how we apply events in Acts & Ephesians 5:18 as not inferring that saved believers are receiving the Holy Spirit apart from that salvation moment in any shape, form, or fashion for it relates to apostasy.
We are filled as a testimony that we are saved for why we can never be seen as a leaky vessel needing an infilling of the holy Spirit.
Matthew 9:17 Neither do men put new wine into old bottles: else the bottles break, and the wine runneth out, and the bottles perish: but they put new wine into new bottles, and both are preserved.
We are all suppose to speak the same thing & hold to the same judgment per 1 Corinthians 1:9-10 for why those who speak about receiving the Holy Spirit again apart from salvation ( no matter what they call it as another filling or another sanctification ) are speaking of having another drink of the One Spirit.
1 Corinthians 12:13 For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
So obviously, this requires His help in rightly dividing the word of truth since scripture cannot go against scripture.