Vermiculite insulation found in potential home?

[Cheryl Stash]

We were looking at a house recently, the previous sale fell thru and one of the problems found during inspection was vermiculite insulation in the “non-exposed areas of the attic”. The problem is the attic was finished and made into two bedrooms with crawl spaces etc and also HVAC was added up there in the last few years. Is the whole house likely to be contaminated with asbestos now? Good think we were wearing our n95 masks while going thru for the showing. Can vermiculite ever be truly remediated or will it always be a problem if we bought it. We would want to renovate some in the attic pretty soon after buying as it’s outdated looking. And possible add a complete second floor to the house down the line. And also worried it would be behind the drywall and ceiling of first floor as well. The home owners will give 10k towards remediation. What questions would you ask home owners or would you just walk away?