i’ve created this effect in similiar type scenarios.
So definitely what is going on is a simple breakdown.
top layer text – uneffected
Bottom layer text has displacement mapping applied to it
Then…
to get that random look, you mask off certain letters of your bottom layer.
or even mask off portions of the individual letters themselves. such as only allowing the top of the letter “T” to show..etc
finally maybe a little “fast blur on that 2nd text layer as well.
there ya go
check out the “abandoned” trailer – a similiar scenario though much more advanced stepping and displacment play
https://www.nightmarekinetics.com