Is the LVP going to be glued to the floor or is it a click lock product?
Are you over a wood or concrete substrate?
Fish eyeing (the little potholes) occurs most often when a primer wasn't used. The significant cracking is also indicative of no primer being used.
If you're installing a click lock, floating product then it's probably not the end of the world. Could it have been done better? Yes.
However, if you're planning on installing a glue down product then it's probably going to cause an issue. A glue down product is going to conform to that and would eventually telegraph the cracks and other issues through the product.
Additionally, if this is over a wood substrate then there are only a few products on the market that are acceptable to use over wood substrates without the addition of a 3.2 metal lathe (chicken wire) being added prior to the self-leveling. This lathe works as a reinforcement, similar to rebar in regular concrete, and prevents major cracking when the wood subfloor expands and contracts over the course of a yearly weather cycle. Without the use of primer and or lathe (if it should have been used) then the self-leveling is loosely bonded to the substrate and after it's trafficked on for a period of time that weak bond can loosen and cause a "hollow" sound to the floor.
Again, floating floors will tend to bridge cracks and small pinholes without significant issue, but if you're doing a glued product this should probably be removed and done correctly.
Good luck with your project!